1280574720

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1249}}^1$

素因数の和:1365

約数の個数: 216

約数和(自身を含む): 4484025000

約数和(自身を除く): 3203450280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 89, 90, 96, 120, 128, 144, 160, 178, 180, 192, 240, 256, 267, 288, 320, 356, 360, 384, 445, 480, 534, 576, 640, 712, 720, 768, 801, 890, 960, 1068, 1152, 1249, 1280, 1335, 1424, 1440, 1602, 1780, 1920, 2136, 2304, 2498, 2670, 2848, 2880, 3204, 3560, 3747, 3840, 4005, 4272, 4996, 5340, 5696, 5760, 6245, 6408, 7120, 7494, 8010, 8544, 9992, 10680, 11241, 11392, 11520, 12490, 12816, 14240, 14988, 16020, 17088, 18735, 19984, 21360, 22482, 22784, 24980, 25632, 28480, 29976, 32040, 34176, 37470, 39968, 42720, 44964, 49960, 51264, 56205, 56960, 59952, 64080, 68352, 74940, 79936, 85440, 89928, 99920, 102528, 111161, 112410, 113920, 119904, 128160, 149880, 159872, 170880, 179856, 199840, 205056, 222322, 224820, 239808, 256320, 299760, 319744, 333483, 341760, 359712, 399680, 444644, 449640, 479616, 512640, 555805, 599520, 666966, 719424, 799360, 889288, 899280, 959232, 1000449, 1025280, 1111610, 1199040, 1333932, 1438848, 1598720, 1667415, 1778576, 1798560, 2000898, 2223220, 2398080, 2667864, 2877696, 3334830, 3557152, 3597120, 4001796, 4446440, 4796160, 5002245, 5335728, 6669660, 7114304, 7194240, 8003592, 8892880, 10004490, 10671456, 13339320, 14228608, 14388480, 16007184, 17785760, 20008980, 21342912, 26678640, 28457216, 32014368, 35571520, 40017960, 42685824, 53357280, 64028736, 71143040, 80035920, 85371648, 106714560, 128057472, 142286080, 160071840, 213429120, 256114944, 320143680, 426858240, 640287360, 1280574720]

約数ペア:

[(1, 1280574720), (2, 640287360), (3, 426858240), (4, 320143680), (5, 256114944), (6, 213429120), (8, 160071840), (9, 142286080), (10, 128057472), (12, 106714560), (15, 85371648), (16, 80035920), (18, 71143040), (20, 64028736), (24, 53357280), (30, 42685824), (32, 40017960), (36, 35571520), (40, 32014368), (45, 28457216), (48, 26678640), (60, 21342912), (64, 20008980), (72, 17785760), (80, 16007184), (89, 14388480), (90, 14228608), (96, 13339320), (120, 10671456), (128, 10004490), (144, 8892880), (160, 8003592), (178, 7194240), (180, 7114304), (192, 6669660), (240, 5335728), (256, 5002245), (267, 4796160), (288, 4446440), (320, 4001796), (356, 3597120), (360, 3557152), (384, 3334830), (445, 2877696), (480, 2667864), (534, 2398080), (576, 2223220), (640, 2000898), (712, 1798560), (720, 1778576), (768, 1667415), (801, 1598720), (890, 1438848), (960, 1333932), (1068, 1199040), (1152, 1111610), (1249, 1025280), (1280, 1000449), (1335, 959232), (1424, 899280), (1440, 889288), (1602, 799360), (1780, 719424), (1920, 666966), (2136, 599520), (2304, 555805), (2498, 512640), (2670, 479616), (2848, 449640), (2880, 444644), (3204, 399680), (3560, 359712), (3747, 341760), (3840, 333483), (4005, 319744), (4272, 299760), (4996, 256320), (5340, 239808), (5696, 224820), (5760, 222322), (6245, 205056), (6408, 199840), (7120, 179856), (7494, 170880), (8010, 159872), (8544, 149880), (9992, 128160), (10680, 119904), (11241, 113920), (11392, 112410), (11520, 111161), (12490, 102528), (12816, 99920), (14240, 89928), (14988, 85440), (16020, 79936), (17088, 74940), (18735, 68352), (19984, 64080), (21360, 59952), (22482, 56960), (22784, 56205), (24980, 51264), (25632, 49960), (28480, 44964), (29976, 42720), (32040, 39968), (34176, 37470)]