20045960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1571}}^1$

素因数の和:1622

約数の個数: 64

約数和(自身を含む): 50932800

約数和(自身を除く): 30886840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1571, 1595, 2552, 3142, 3190, 6284, 6380, 7855, 12568, 12760, 15710, 17281, 31420, 34562, 45559, 62840, 69124, 86405, 91118, 138248, 172810, 182236, 227795, 345620, 364472, 455590, 501149, 691240, 911180, 1002298, 1822360, 2004596, 2505745, 4009192, 5011490, 10022980, 20045960]

約数ペア:

[(1, 20045960), (2, 10022980), (4, 5011490), (5, 4009192), (8, 2505745), (10, 2004596), (11, 1822360), (20, 1002298), (22, 911180), (29, 691240), (40, 501149), (44, 455590), (55, 364472), (58, 345620), (88, 227795), (110, 182236), (116, 172810), (145, 138248), (220, 91118), (232, 86405), (290, 69124), (319, 62840), (440, 45559), (580, 34562), (638, 31420), (1160, 17281), (1276, 15710), (1571, 12760), (1595, 12568), (2552, 7855), (3142, 6380), (3190, 6284)]