20981672

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{154277}}^1$

素因数の和:154300

約数の個数: 16

約数和(自身を含む): 41655060

約数和(自身を除く): 20673388

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 154277, 308554, 617108, 1234216, 2622709, 5245418, 10490836, 20981672]

約数ペア:

[(1, 20981672), (2, 10490836), (4, 5245418), (8, 2622709), (17, 1234216), (34, 617108), (68, 308554), (136, 154277)]