28137907

素因数分解:

$7^2\times {\mathrm{17}}^2\times {\mathrm{1987}}^1$

素因数の和:2035

約数の個数: 18

約数和(自身を含む): 34788012

約数和(自身を除く): 6650105

約数列:

[1, 7, 17, 49, 119, 289, 833, 1987, 2023, 13909, 14161, 33779, 97363, 236453, 574243, 1655171, 4019701, 28137907]

約数ペア:

[(1, 28137907), (7, 4019701), (17, 1655171), (49, 574243), (119, 236453), (289, 97363), (833, 33779), (1987, 14161), (2023, 13909)]