18005091280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{487}}^1\times {\mathrm{42013}}^1$

素因数の和:42524

約数の個数: 80

約数和(自身を含む): 45762321024

約数和(自身を除く): 27757229744

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 487, 880, 974, 1948, 2435, 3896, 4870, 5357, 7792, 9740, 10714, 19480, 21428, 26785, 38960, 42013, 42856, 53570, 84026, 85712, 107140, 168052, 210065, 214280, 336104, 420130, 428560, 462143, 672208, 840260, 924286, 1680520, 1848572, 2310715, 3361040, 3697144, 4621430, 7394288, 9242860, 18485720, 20460331, 36971440, 40920662, 81841324, 102301655, 163682648, 204603310, 225063641, 327365296, 409206620, 450127282, 818413240, 900254564, 1125318205, 1636826480, 1800509128, 2250636410, 3601018256, 4501272820, 9002545640, 18005091280]

約数ペア:

[(1, 18005091280), (2, 9002545640), (4, 4501272820), (5, 3601018256), (8, 2250636410), (10, 1800509128), (11, 1636826480), (16, 1125318205), (20, 900254564), (22, 818413240), (40, 450127282), (44, 409206620), (55, 327365296), (80, 225063641), (88, 204603310), (110, 163682648), (176, 102301655), (220, 81841324), (440, 40920662), (487, 36971440), (880, 20460331), (974, 18485720), (1948, 9242860), (2435, 7394288), (3896, 4621430), (4870, 3697144), (5357, 3361040), (7792, 2310715), (9740, 1848572), (10714, 1680520), (19480, 924286), (21428, 840260), (26785, 672208), (38960, 462143), (42013, 428560), (42856, 420130), (53570, 336104), (84026, 214280), (85712, 210065), (107140, 168052)]