21237265

素因数分解:

$5^1\times 7^1\times {\mathrm{379}}^1\times {\mathrm{1601}}^1$

素因数の和:1992

約数の個数: 16

約数和(自身を含む): 29220480

約数和(自身を除く): 7983215

約数列:

[1, 5, 7, 35, 379, 1601, 1895, 2653, 8005, 11207, 13265, 56035, 606779, 3033895, 4247453, 21237265]

約数ペア:

[(1, 21237265), (5, 4247453), (7, 3033895), (35, 606779), (379, 56035), (1601, 13265), (1895, 11207), (2653, 8005)]