21292791

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{6911}}^1$

素因数の和:7006

約数の個数: 16

約数和(自身を含む): 30965760

約数和(自身を除く): 9672969

約数列:

[1, 3, 13, 39, 79, 237, 1027, 3081, 6911, 20733, 89843, 269529, 545969, 1637907, 7097597, 21292791]

約数ペア:

[(1, 21292791), (3, 7097597), (13, 1637907), (39, 545969), (79, 269529), (237, 89843), (1027, 20733), (3081, 6911)]