90398420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{645703}}^1$

素因数の和:645719

約数の個数: 24

約数和(自身を含む): 216956544

約数和(自身を除く): 126558124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 645703, 1291406, 2582812, 3228515, 4519921, 6457030, 9039842, 12914060, 18079684, 22599605, 45199210, 90398420]

約数ペア:

[(1, 90398420), (2, 45199210), (4, 22599605), (5, 18079684), (7, 12914060), (10, 9039842), (14, 6457030), (20, 4519921), (28, 3228515), (35, 2582812), (70, 1291406), (140, 645703)]