640792320

素因数分解:

$2^8\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{769}}^1$

素因数の和:831

約数の個数: 288

約数和(自身を含む): 2417479680

約数和(自身を除く): 1776687360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 32, 35, 40, 42, 48, 56, 60, 62, 64, 70, 80, 84, 93, 96, 105, 112, 120, 124, 128, 140, 155, 160, 168, 186, 192, 210, 217, 224, 240, 248, 256, 280, 310, 320, 336, 372, 384, 420, 434, 448, 465, 480, 496, 560, 620, 640, 651, 672, 744, 768, 769, 840, 868, 896, 930, 960, 992, 1085, 1120, 1240, 1280, 1302, 1344, 1488, 1538, 1680, 1736, 1792, 1860, 1920, 1984, 2170, 2240, 2307, 2480, 2604, 2688, 2976, 3076, 3255, 3360, 3472, 3720, 3840, 3845, 3968, 4340, 4480, 4614, 4960, 5208, 5376, 5383, 5952, 6152, 6510, 6720, 6944, 7440, 7690, 7936, 8680, 8960, 9228, 9920, 10416, 10766, 11535, 11904, 12304, 13020, 13440, 13888, 14880, 15380, 16149, 17360, 18456, 19840, 20832, 21532, 23070, 23808, 23839, 24608, 26040, 26880, 26915, 27776, 29760, 30760, 32298, 34720, 36912, 39680, 41664, 43064, 46140, 47678, 49216, 52080, 53830, 55552, 59520, 61520, 64596, 69440, 71517, 73824, 80745, 83328, 86128, 92280, 95356, 98432, 104160, 107660, 119040, 119195, 123040, 129192, 138880, 143034, 147648, 161490, 166656, 166873, 172256, 184560, 190712, 196864, 208320, 215320, 238390, 246080, 258384, 277760, 286068, 295296, 322980, 333746, 344512, 357585, 369120, 381424, 416640, 430640, 476780, 492160, 500619, 516768, 572136, 590592, 645960, 667492, 689024, 715170, 738240, 762848, 833280, 834365, 861280, 953560, 984320, 1001238, 1033536, 1144272, 1291920, 1334984, 1378048, 1430340, 1476480, 1525696, 1668730, 1722560, 1907120, 2002476, 2067072, 2288544, 2503095, 2583840, 2669968, 2860680, 2952960, 3051392, 3337460, 3445120, 3814240, 4004952, 4134144, 4577088, 5006190, 5167680, 5339936, 5721360, 6102784, 6674920, 6890240, 7628480, 8009904, 9154176, 10012380, 10335360, 10679872, 11442720, 13349840, 15256960, 16019808, 18308352, 20024760, 20670720, 21359744, 22885440, 26699680, 30513920, 32039616, 40049520, 42719488, 45770880, 53399360, 64079232, 80099040, 91541760, 106798720, 128158464, 160198080, 213597440, 320396160, 640792320]

約数ペア:

[(1, 640792320), (2, 320396160), (3, 213597440), (4, 160198080), (5, 128158464), (6, 106798720), (7, 91541760), (8, 80099040), (10, 64079232), (12, 53399360), (14, 45770880), (15, 42719488), (16, 40049520), (20, 32039616), (21, 30513920), (24, 26699680), (28, 22885440), (30, 21359744), (31, 20670720), (32, 20024760), (35, 18308352), (40, 16019808), (42, 15256960), (48, 13349840), (56, 11442720), (60, 10679872), (62, 10335360), (64, 10012380), (70, 9154176), (80, 8009904), (84, 7628480), (93, 6890240), (96, 6674920), (105, 6102784), (112, 5721360), (120, 5339936), (124, 5167680), (128, 5006190), (140, 4577088), (155, 4134144), (160, 4004952), (168, 3814240), (186, 3445120), (192, 3337460), (210, 3051392), (217, 2952960), (224, 2860680), (240, 2669968), (248, 2583840), (256, 2503095), (280, 2288544), (310, 2067072), (320, 2002476), (336, 1907120), (372, 1722560), (384, 1668730), (420, 1525696), (434, 1476480), (448, 1430340), (465, 1378048), (480, 1334984), (496, 1291920), (560, 1144272), (620, 1033536), (640, 1001238), (651, 984320), (672, 953560), (744, 861280), (768, 834365), (769, 833280), (840, 762848), (868, 738240), (896, 715170), (930, 689024), (960, 667492), (992, 645960), (1085, 590592), (1120, 572136), (1240, 516768), (1280, 500619), (1302, 492160), (1344, 476780), (1488, 430640), (1538, 416640), (1680, 381424), (1736, 369120), (1792, 357585), (1860, 344512), (1920, 333746), (1984, 322980), (2170, 295296), (2240, 286068), (2307, 277760), (2480, 258384), (2604, 246080), (2688, 238390), (2976, 215320), (3076, 208320), (3255, 196864), (3360, 190712), (3472, 184560), (3720, 172256), (3840, 166873), (3845, 166656), (3968, 161490), (4340, 147648), (4480, 143034), (4614, 138880), (4960, 129192), (5208, 123040), (5376, 119195), (5383, 119040), (5952, 107660), (6152, 104160), (6510, 98432), (6720, 95356), (6944, 92280), (7440, 86128), (7690, 83328), (7936, 80745), (8680, 73824), (8960, 71517), (9228, 69440), (9920, 64596), (10416, 61520), (10766, 59520), (11535, 55552), (11904, 53830), (12304, 52080), (13020, 49216), (13440, 47678), (13888, 46140), (14880, 43064), (15380, 41664), (16149, 39680), (17360, 36912), (18456, 34720), (19840, 32298), (20832, 30760), (21532, 29760), (23070, 27776), (23808, 26915), (23839, 26880), (24608, 26040)]