19665778

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{569}}^1\times {\mathrm{1571}}^1$

素因数の和:2153

約数の個数: 16

約数和(自身を含む): 32257440

約数和(自身を除く): 12591662

約数列:

[1, 2, 11, 22, 569, 1138, 1571, 3142, 6259, 12518, 17281, 34562, 893899, 1787798, 9832889, 19665778]

約数ペア:

[(1, 19665778), (2, 9832889), (11, 1787798), (22, 893899), (569, 34562), (1138, 17281), (1571, 12518), (3142, 6259)]