18820855

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{293}}^1\times {\mathrm{443}}^1$

素因数の和:770

約数の個数: 16

約数和(自身を含む): 23496480

約数和(自身を除く): 4675625

約数列:

[1, 5, 29, 145, 293, 443, 1465, 2215, 8497, 12847, 42485, 64235, 129799, 648995, 3764171, 18820855]

約数ペア:

[(1, 18820855), (5, 3764171), (29, 648995), (145, 129799), (293, 64235), (443, 42485), (1465, 12847), (2215, 8497)]