21433360

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{557}}^1$

素因数の和:620

約数の個数: 80

約数和(自身を含む): 55215216

約数和(自身を除く): 33781856

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 37, 40, 52, 65, 74, 80, 104, 130, 148, 185, 208, 260, 296, 370, 481, 520, 557, 592, 740, 962, 1040, 1114, 1480, 1924, 2228, 2405, 2785, 2960, 3848, 4456, 4810, 5570, 7241, 7696, 8912, 9620, 11140, 14482, 19240, 20609, 22280, 28964, 36205, 38480, 41218, 44560, 57928, 72410, 82436, 103045, 115856, 144820, 164872, 206090, 267917, 289640, 329744, 412180, 535834, 579280, 824360, 1071668, 1339585, 1648720, 2143336, 2679170, 4286672, 5358340, 10716680, 21433360]

約数ペア:

[(1, 21433360), (2, 10716680), (4, 5358340), (5, 4286672), (8, 2679170), (10, 2143336), (13, 1648720), (16, 1339585), (20, 1071668), (26, 824360), (37, 579280), (40, 535834), (52, 412180), (65, 329744), (74, 289640), (80, 267917), (104, 206090), (130, 164872), (148, 144820), (185, 115856), (208, 103045), (260, 82436), (296, 72410), (370, 57928), (481, 44560), (520, 41218), (557, 38480), (592, 36205), (740, 28964), (962, 22280), (1040, 20609), (1114, 19240), (1480, 14482), (1924, 11140), (2228, 9620), (2405, 8912), (2785, 7696), (2960, 7241), (3848, 5570), (4456, 4810)]