21312490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4877}}^1$

素因数の和:4926

約数の個数: 32

約数和(自身を含む): 42145920

約数和(自身を除く): 20833430

約数列:

[1, 2, 5, 10, 19, 23, 38, 46, 95, 115, 190, 230, 437, 874, 2185, 4370, 4877, 9754, 24385, 48770, 92663, 112171, 185326, 224342, 463315, 560855, 926630, 1121710, 2131249, 4262498, 10656245, 21312490]

約数ペア:

[(1, 21312490), (2, 10656245), (5, 4262498), (10, 2131249), (19, 1121710), (23, 926630), (38, 560855), (46, 463315), (95, 224342), (115, 185326), (190, 112171), (230, 92663), (437, 48770), (874, 24385), (2185, 9754), (4370, 4877)]