28657616

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{137777}}^1$

素因数の和:137798

約数の個数: 20

約数和(自身を含む): 59795652

約数和(自身を除く): 31138036

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 137777, 275554, 551108, 1102216, 1791101, 2204432, 3582202, 7164404, 14328808, 28657616]

約数ペア:

[(1, 28657616), (2, 14328808), (4, 7164404), (8, 3582202), (13, 2204432), (16, 1791101), (26, 1102216), (52, 551108), (104, 275554), (208, 137777)]