81390505

素因数分解:

$5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{15607}}^1$

素因数の和:15768

約数の個数: 16

約数和(自身を含む): 112377600

約数和(自身を除く): 30987095

約数列:

[1, 5, 7, 35, 149, 745, 1043, 5215, 15607, 78035, 109249, 546245, 2325443, 11627215, 16278101, 81390505]

約数ペア:

[(1, 81390505), (5, 16278101), (7, 11627215), (35, 2325443), (149, 546245), (745, 109249), (1043, 78035), (5215, 15607)]