20407359

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{12301}}^1$

素因数の和:12390

約数の個数: 16

約数和(自身を含む): 31493120

約数和(自身を除く): 11085761

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 12301, 36903, 86107, 258321, 971779, 2915337, 6802453, 20407359]

約数ペア:

[(1, 20407359), (3, 6802453), (7, 2915337), (21, 971779), (79, 258321), (237, 86107), (553, 36903), (1659, 12301)]