21949460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{84421}}^1$

素因数の和:84443

約数の個数: 24

約数和(自身を含む): 49640136

約数和(自身を除く): 27690676

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 84421, 168842, 337684, 422105, 844210, 1097473, 1688420, 2194946, 4389892, 5487365, 10974730, 21949460]

約数ペア:

[(1, 21949460), (2, 10974730), (4, 5487365), (5, 4389892), (10, 2194946), (13, 1688420), (20, 1097473), (26, 844210), (52, 422105), (65, 337684), (130, 168842), (260, 84421)]