21718538

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{2351}}^1$

素因数の和:2533

約数の個数: 16

約数和(自身を含む): 33868800

約数和(自身を除く): 12150262

約数列:

[1, 2, 31, 62, 149, 298, 2351, 4619, 4702, 9238, 72881, 145762, 350299, 700598, 10859269, 21718538]

約数ペア:

[(1, 21718538), (2, 10859269), (31, 700598), (62, 350299), (149, 145762), (298, 72881), (2351, 9238), (4619, 4702)]