21318387

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{293}}^1\times {\mathrm{307}}^1$

素因数の和:682

約数の個数: 16

約数和(自身を含む): 28976640

約数和(自身を除く): 7658253

約数列:

[1, 3, 79, 237, 293, 307, 879, 921, 23147, 24253, 69441, 72759, 89951, 269853, 7106129, 21318387]

約数ペア:

[(1, 21318387), (3, 7106129), (79, 269853), (237, 89951), (293, 72759), (307, 69441), (879, 24253), (921, 23147)]