20998672

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77201}}^1$

素因数の和:77226

約数の個数: 20

約数和(自身を含む): 43078716

約数和(自身を除く): 22080044

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77201, 154402, 308804, 617608, 1235216, 1312417, 2624834, 5249668, 10499336, 20998672]

約数ペア:

[(1, 20998672), (2, 10499336), (4, 5249668), (8, 2624834), (16, 1312417), (17, 1235216), (34, 617608), (68, 308804), (136, 154402), (272, 77201)]