20911863

素因数分解:

$3^1\times 7^1\times {\mathrm{457}}^1\times {\mathrm{2179}}^1$

素因数の和:2646

約数の個数: 16

約数和(自身を含む): 31950080

約数和(自身を除く): 11038217

約数列:

[1, 3, 7, 21, 457, 1371, 2179, 3199, 6537, 9597, 15253, 45759, 995803, 2987409, 6970621, 20911863]

約数ペア:

[(1, 20911863), (3, 6970621), (7, 2987409), (21, 995803), (457, 45759), (1371, 15253), (2179, 9597), (3199, 6537)]