21079331

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5387}}^1$

素因数の和:5450

約数の個数: 16

約数和(自身を含む): 26552064

約数和(自身を除く): 5472733

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 5387, 37709, 70031, 231641, 490217, 1621487, 3011333, 21079331]

約数ペア:

[(1, 21079331), (7, 3011333), (13, 1621487), (43, 490217), (91, 231641), (301, 70031), (559, 37709), (3913, 5387)]