21719225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{78979}}^1$

素因数の和:79000

約数の個数: 12

約数和(自身を含む): 29380560

約数和(自身を除く): 7661335

約数列:

[1, 5, 11, 25, 55, 275, 78979, 394895, 868769, 1974475, 4343845, 21719225]

約数ペア:

[(1, 21719225), (5, 4343845), (11, 1974475), (25, 868769), (55, 394895), (275, 78979)]