21377168

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{5323}}^1$

素因数の和:5582

約数の個数: 20

約数和(自身を含む): 41591088

約数和(自身を除く): 20213920

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 5323, 10646, 21292, 42584, 85168, 1336073, 2672146, 5344292, 10688584, 21377168]

約数ペア:

[(1, 21377168), (2, 10688584), (4, 5344292), (8, 2672146), (16, 1336073), (251, 85168), (502, 42584), (1004, 21292), (2008, 10646), (4016, 5323)]