256441920

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1231}}^1$

素因数の和:1289

約数の個数: 224

約数和(自身を含む): 961314816

約数和(自身を除く): 704872896

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, 140, 155, 160, 168, 186, 192, 210, 217, 224, 240, 248, 280, 310, 320, 336, 372, 420, 434, 448, 465, 480, 496, 560, 620, 651, 672, 744, 840, 868, 930, 960, 992, 1085, 1120, 1231, 1240, 1302, 1344, 1488, 1680, 1736, 1860, 1984, 2170, 2240, 2462, 2480, 2604, 2976, 3255, 3360, 3472, 3693, 3720, 4340, 4924, 4960, 5208, 5952, 6155, 6510, 6720, 6944, 7386, 7440, 8617, 8680, 9848, 9920, 10416, 12310, 13020, 13888, 14772, 14880, 17234, 17360, 18465, 19696, 20832, 24620, 25851, 26040, 29544, 29760, 34468, 34720, 36930, 38161, 39392, 41664, 43085, 49240, 51702, 52080, 59088, 68936, 69440, 73860, 76322, 78784, 86170, 98480, 103404, 104160, 114483, 118176, 129255, 137872, 147720, 152644, 172340, 190805, 196960, 206808, 208320, 228966, 236352, 258510, 267127, 275744, 295440, 305288, 344680, 381610, 393920, 413616, 457932, 517020, 534254, 551488, 572415, 590880, 610576, 689360, 763220, 801381, 827232, 915864, 1034040, 1068508, 1144830, 1181760, 1221152, 1335635, 1378720, 1526440, 1602762, 1654464, 1831728, 2068080, 2137016, 2289660, 2442304, 2671270, 2757440, 3052880, 3205524, 3663456, 4006905, 4136160, 4274032, 4579320, 5342540, 6105760, 6411048, 7326912, 8013810, 8272320, 8548064, 9158640, 10685080, 12211520, 12822096, 16027620, 17096128, 18317280, 21370160, 25644192, 32055240, 36634560, 42740320, 51288384, 64110480, 85480640, 128220960, 256441920]

約数ペア:

[(1, 256441920), (2, 128220960), (3, 85480640), (4, 64110480), (5, 51288384), (6, 42740320), (7, 36634560), (8, 32055240), (10, 25644192), (12, 21370160), (14, 18317280), (15, 17096128), (16, 16027620), (20, 12822096), (21, 12211520), (24, 10685080), (28, 9158640), (30, 8548064), (31, 8272320), (32, 8013810), (35, 7326912), (40, 6411048), (42, 6105760), (48, 5342540), (56, 4579320), (60, 4274032), (62, 4136160), (64, 4006905), (70, 3663456), (80, 3205524), (84, 3052880), (93, 2757440), (96, 2671270), (105, 2442304), (112, 2289660), (120, 2137016), (124, 2068080), (140, 1831728), (155, 1654464), (160, 1602762), (168, 1526440), (186, 1378720), (192, 1335635), (210, 1221152), (217, 1181760), (224, 1144830), (240, 1068508), (248, 1034040), (280, 915864), (310, 827232), (320, 801381), (336, 763220), (372, 689360), (420, 610576), (434, 590880), (448, 572415), (465, 551488), (480, 534254), (496, 517020), (560, 457932), (620, 413616), (651, 393920), (672, 381610), (744, 344680), (840, 305288), (868, 295440), (930, 275744), (960, 267127), (992, 258510), (1085, 236352), (1120, 228966), (1231, 208320), (1240, 206808), (1302, 196960), (1344, 190805), (1488, 172340), (1680, 152644), (1736, 147720), (1860, 137872), (1984, 129255), (2170, 118176), (2240, 114483), (2462, 104160), (2480, 103404), (2604, 98480), (2976, 86170), (3255, 78784), (3360, 76322), (3472, 73860), (3693, 69440), (3720, 68936), (4340, 59088), (4924, 52080), (4960, 51702), (5208, 49240), (5952, 43085), (6155, 41664), (6510, 39392), (6720, 38161), (6944, 36930), (7386, 34720), (7440, 34468), (8617, 29760), (8680, 29544), (9848, 26040), (9920, 25851), (10416, 24620), (12310, 20832), (13020, 19696), (13888, 18465), (14772, 17360), (14880, 17234)]