20981570408

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{154276253}}^1$

素因数の和:154276276

約数の個数: 16

約数和(自身を含む): 41654588580

約数和(自身を除く): 20673018172

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 154276253, 308552506, 617105012, 1234210024, 2622696301, 5245392602, 10490785204, 20981570408]

約数ペア:

[(1, 20981570408), (2, 10490785204), (4, 5245392602), (8, 2622696301), (17, 1234210024), (34, 617105012), (68, 308552506), (136, 154276253)]