21100387

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{3079}}^1$

素因数の和:3186

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 5510813

約数列:

[1, 7, 11, 77, 89, 623, 979, 3079, 6853, 21553, 33869, 237083, 274031, 1918217, 3014341, 21100387]

約数ペア:

[(1, 21100387), (7, 3014341), (11, 1918217), (77, 274031), (89, 237083), (623, 33869), (979, 21553), (3079, 6853)]