20404618

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{18251}}^1$

素因数の和:18309

約数の個数: 16

約数和(自身を含む): 33729696

約数和(自身を除く): 13325078

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 18251, 36502, 237263, 474526, 784793, 1569586, 10202309, 20404618]

約数ペア:

[(1, 20404618), (2, 10202309), (13, 1569586), (26, 784793), (43, 474526), (86, 237263), (559, 36502), (1118, 18251)]