21370011

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{12743}}^1$

素因数の和:12802

約数の個数: 16

約数和(自身を含む): 31401216

約数和(自身を除く): 10031205

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 12743, 38229, 165659, 496977, 547949, 1643847, 7123337, 21370011]

約数ペア:

[(1, 21370011), (3, 7123337), (13, 1643847), (39, 547949), (43, 496977), (129, 165659), (559, 38229), (1677, 12743)]