20138420

素因数分解:

$2^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{3217}}^1$

素因数の和:3539

約数の個数: 24

約数和(自身を含む): 42438984

約数和(自身を除く): 22300564

約数列:

[1, 2, 4, 5, 10, 20, 313, 626, 1252, 1565, 3130, 3217, 6260, 6434, 12868, 16085, 32170, 64340, 1006921, 2013842, 4027684, 5034605, 10069210, 20138420]

約数ペア:

[(1, 20138420), (2, 10069210), (4, 5034605), (5, 4027684), (10, 2013842), (20, 1006921), (313, 64340), (626, 32170), (1252, 16085), (1565, 12868), (3130, 6434), (3217, 6260)]