21311277

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{6917}}^1$

素因数の和:7012

約数の個数: 16

約数和(自身を含む): 30992640

約数和(自身を除く): 9681363

約数列:

[1, 3, 13, 39, 79, 237, 1027, 3081, 6917, 20751, 89921, 269763, 546443, 1639329, 7103759, 21311277]

約数ペア:

[(1, 21311277), (3, 7103759), (13, 1639329), (39, 546443), (79, 269763), (237, 89921), (1027, 20751), (3081, 6917)]