21339664

素因数分解:

$2^4\times {\mathrm{179}}^1\times {\mathrm{7451}}^1$

素因数の和:7638

約数の個数: 20

約数和(自身を含む): 41582160

約数和(自身を除く): 20242496

約数列:

[1, 2, 4, 8, 16, 179, 358, 716, 1432, 2864, 7451, 14902, 29804, 59608, 119216, 1333729, 2667458, 5334916, 10669832, 21339664]

約数ペア:

[(1, 21339664), (2, 10669832), (4, 5334916), (8, 2667458), (16, 1333729), (179, 119216), (358, 59608), (716, 29804), (1432, 14902), (2864, 7451)]