20178849730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{155221921}}^1$

素因数の和:155221941

約数の個数: 16

約数和(自身を含む): 39115924344

約数和(自身を除く): 18937074614

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 155221921, 310443842, 776109605, 1552219210, 2017884973, 4035769946, 10089424865, 20178849730]

約数ペア:

[(1, 20178849730), (2, 10089424865), (5, 4035769946), (10, 2017884973), (13, 1552219210), (26, 776109605), (65, 310443842), (130, 155221921)]