21145736

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{39451}}^1$

素因数の和:39524

約数の個数: 16

約数和(自身を含む): 40241040

約数和(自身を除く): 19095304

約数列:

[1, 2, 4, 8, 67, 134, 268, 536, 39451, 78902, 157804, 315608, 2643217, 5286434, 10572868, 21145736]

約数ペア:

[(1, 21145736), (2, 10572868), (4, 5286434), (8, 2643217), (67, 315608), (134, 157804), (268, 78902), (536, 39451)]