7981226

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{887}}^1$

素因数の和:1309

約数の個数: 16

約数和(自身を含む): 13106880

約数和(自身を除く): 5125654

約数列:

[1, 2, 11, 22, 409, 818, 887, 1774, 4499, 8998, 9757, 19514, 362783, 725566, 3990613, 7981226]

約数ペア:

[(1, 7981226), (2, 3990613), (11, 725566), (22, 362783), (409, 19514), (818, 9757), (887, 8998), (1774, 4499)]