20191490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{9661}}^1$

素因数の和:9698

約数の個数: 32

約数和(自身を含む): 41739840

約数和(自身を除く): 21548350

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 418, 1045, 2090, 9661, 19322, 48305, 96610, 106271, 183559, 212542, 367118, 531355, 917795, 1062710, 1835590, 2019149, 4038298, 10095745, 20191490]

約数ペア:

[(1, 20191490), (2, 10095745), (5, 4038298), (10, 2019149), (11, 1835590), (19, 1062710), (22, 917795), (38, 531355), (55, 367118), (95, 212542), (110, 183559), (190, 106271), (209, 96610), (418, 48305), (1045, 19322), (2090, 9661)]