21013917

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{887}}^1$

素因数の和:1092

約数の個数: 16

約数和(自身を含む): 28771200

約数和(自身を除く): 7757283

約数列:

[1, 3, 53, 149, 159, 447, 887, 2661, 7897, 23691, 47011, 132163, 141033, 396489, 7004639, 21013917]

約数ペア:

[(1, 21013917), (3, 7004639), (53, 396489), (149, 141033), (159, 132163), (447, 47011), (887, 23691), (2661, 7897)]