20961982225

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{27047719}}^1$

素因数の和:27047760

約数の個数: 12

約数和(自身を含む): 26831338240

約数和(自身を除く): 5869356015

約数列:

[1, 5, 25, 31, 155, 775, 27047719, 135238595, 676192975, 838479289, 4192396445, 20961982225]

約数ペア:

[(1, 20961982225), (5, 4192396445), (25, 838479289), (31, 676192975), (155, 135238595), (775, 27047719)]