21051304

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{154789}}^1$

素因数の和:154812

約数の個数: 16

約数和(自身を含む): 41793300

約数和(自身を除く): 20741996

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 154789, 309578, 619156, 1238312, 2631413, 5262826, 10525652, 21051304]

約数ペア:

[(1, 21051304), (2, 10525652), (4, 5262826), (8, 2631413), (17, 1238312), (34, 619156), (68, 309578), (136, 154789)]