20928904

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{153889}}^1$

素因数の和:153912

約数の個数: 16

約数和(自身を含む): 41550300

約数和(自身を除く): 20621396

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 153889, 307778, 615556, 1231112, 2616113, 5232226, 10464452, 20928904]

約数ペア:

[(1, 20928904), (2, 10464452), (4, 5232226), (8, 2616113), (17, 1231112), (34, 615556), (68, 307778), (136, 153889)]