21993235

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4493}}^1$

素因数の和:4598

約数の個数: 16

約数和(自身を含む): 29121120

約数和(自身を除く): 7127885

約数列:

[1, 5, 11, 55, 89, 445, 979, 4493, 4895, 22465, 49423, 247115, 399877, 1999385, 4398647, 21993235]

約数ペア:

[(1, 21993235), (5, 4398647), (11, 1999385), (55, 399877), (89, 247115), (445, 49423), (979, 22465), (4493, 4895)]