18628145

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{1021}}^1$

素因数の和:1156

約数の個数: 16

約数和(自身を含む): 23178960

約数和(自身を除く): 4550815

約数列:

[1, 5, 41, 89, 205, 445, 1021, 3649, 5105, 18245, 41861, 90869, 209305, 454345, 3725629, 18628145]

約数ペア:

[(1, 18628145), (5, 3725629), (41, 454345), (89, 209305), (205, 90869), (445, 41861), (1021, 18245), (3649, 5105)]