20504990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{9811}}^1$

素因数の和:9848

約数の個数: 32

約数和(自身を含む): 42387840

約数和(自身を除く): 21882850

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 418, 1045, 2090, 9811, 19622, 49055, 98110, 107921, 186409, 215842, 372818, 539605, 932045, 1079210, 1864090, 2050499, 4100998, 10252495, 20504990]

約数ペア:

[(1, 20504990), (2, 10252495), (5, 4100998), (10, 2050499), (11, 1864090), (19, 1079210), (22, 932045), (38, 539605), (55, 372818), (95, 215842), (110, 186409), (190, 107921), (209, 98110), (418, 49055), (1045, 19622), (2090, 9811)]