21578635

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10709}}^1$

素因数の和:10758

約数の個数: 16

約数和(自身を含む): 28788480

約数和(自身を除く): 7209845

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10709, 53545, 139217, 331979, 696085, 1659895, 4315727, 21578635]

約数ペア:

[(1, 21578635), (5, 4315727), (13, 1659895), (31, 696085), (65, 331979), (155, 139217), (403, 53545), (2015, 10709)]