18587005

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{409}}^1$

素因数の和:624

約数の個数: 16

約数和(自身を含む): 22878000

約数和(自身を除く): 4290995

約数列:

[1, 5, 61, 149, 305, 409, 745, 2045, 9089, 24949, 45445, 60941, 124745, 304705, 3717401, 18587005]

約数ペア:

[(1, 18587005), (5, 3717401), (61, 304705), (149, 124745), (305, 60941), (409, 45445), (745, 24949), (2045, 9089)]