21981850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2351}}^1$

素因数の和:2391

約数の個数: 48

約数和(自身を含む): 47246976

約数和(自身を除く): 25265126

約数列:

[1, 2, 5, 10, 11, 17, 22, 25, 34, 50, 55, 85, 110, 170, 187, 275, 374, 425, 550, 850, 935, 1870, 2351, 4675, 4702, 9350, 11755, 23510, 25861, 39967, 51722, 58775, 79934, 117550, 129305, 199835, 258610, 399670, 439637, 646525, 879274, 999175, 1293050, 1998350, 2198185, 4396370, 10990925, 21981850]

約数ペア:

[(1, 21981850), (2, 10990925), (5, 4396370), (10, 2198185), (11, 1998350), (17, 1293050), (22, 999175), (25, 879274), (34, 646525), (50, 439637), (55, 399670), (85, 258610), (110, 199835), (170, 129305), (187, 117550), (275, 79934), (374, 58775), (425, 51722), (550, 39967), (850, 25861), (935, 23510), (1870, 11755), (2351, 9350), (4675, 4702)]