20163950420

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1525261}}^1$

素因数の和:1525931

約数の個数: 24

約数和(自身を含む): 42408384648

約数和(自身を除く): 22244434228

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 2644, 3305, 6610, 13220, 1525261, 3050522, 6101044, 7626305, 15252610, 30505220, 1008197521, 2016395042, 4032790084, 5040987605, 10081975210, 20163950420]

約数ペア:

[(1, 20163950420), (2, 10081975210), (4, 5040987605), (5, 4032790084), (10, 2016395042), (20, 1008197521), (661, 30505220), (1322, 15252610), (2644, 7626305), (3305, 6101044), (6610, 3050522), (13220, 1525261)]