21163376

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101747}}^1$

素因数の和:101768

約数の個数: 20

約数和(自身を含む): 44158632

約数和(自身を除く): 22995256

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101747, 203494, 406988, 813976, 1322711, 1627952, 2645422, 5290844, 10581688, 21163376]

約数ペア:

[(1, 21163376), (2, 10581688), (4, 5290844), (8, 2645422), (13, 1627952), (16, 1322711), (26, 813976), (52, 406988), (104, 203494), (208, 101747)]