400385280

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{821}}^1$

素因数の和:972

約数の個数: 144

約数和(自身を含む): 1290369024

約数和(自身を除く): 889983744

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 127, 128, 160, 192, 240, 254, 256, 320, 381, 384, 480, 508, 635, 640, 762, 768, 821, 960, 1016, 1270, 1280, 1524, 1642, 1905, 1920, 2032, 2463, 2540, 3048, 3284, 3810, 3840, 4064, 4105, 4926, 5080, 6096, 6568, 7620, 8128, 8210, 9852, 10160, 12192, 12315, 13136, 15240, 16256, 16420, 19704, 20320, 24384, 24630, 26272, 30480, 32512, 32840, 39408, 40640, 48768, 49260, 52544, 60960, 65680, 78816, 81280, 97536, 98520, 104267, 105088, 121920, 131360, 157632, 162560, 197040, 208534, 210176, 243840, 262720, 312801, 315264, 394080, 417068, 487680, 521335, 525440, 625602, 630528, 788160, 834136, 1042670, 1050880, 1251204, 1564005, 1576320, 1668272, 2085340, 2502408, 3128010, 3152640, 3336544, 4170680, 5004816, 6256020, 6673088, 8341360, 10009632, 12512040, 13346176, 16682720, 20019264, 25024080, 26692352, 33365440, 40038528, 50048160, 66730880, 80077056, 100096320, 133461760, 200192640, 400385280]

約数ペア:

[(1, 400385280), (2, 200192640), (3, 133461760), (4, 100096320), (5, 80077056), (6, 66730880), (8, 50048160), (10, 40038528), (12, 33365440), (15, 26692352), (16, 25024080), (20, 20019264), (24, 16682720), (30, 13346176), (32, 12512040), (40, 10009632), (48, 8341360), (60, 6673088), (64, 6256020), (80, 5004816), (96, 4170680), (120, 3336544), (127, 3152640), (128, 3128010), (160, 2502408), (192, 2085340), (240, 1668272), (254, 1576320), (256, 1564005), (320, 1251204), (381, 1050880), (384, 1042670), (480, 834136), (508, 788160), (635, 630528), (640, 625602), (762, 525440), (768, 521335), (821, 487680), (960, 417068), (1016, 394080), (1270, 315264), (1280, 312801), (1524, 262720), (1642, 243840), (1905, 210176), (1920, 208534), (2032, 197040), (2463, 162560), (2540, 157632), (3048, 131360), (3284, 121920), (3810, 105088), (3840, 104267), (4064, 98520), (4105, 97536), (4926, 81280), (5080, 78816), (6096, 65680), (6568, 60960), (7620, 52544), (8128, 49260), (8210, 48768), (9852, 40640), (10160, 39408), (12192, 32840), (12315, 32512), (13136, 30480), (15240, 26272), (16256, 24630), (16420, 24384), (19704, 20320)]