19913305

素因数分解:

$5^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{613}}^1$

素因数の和:780

約数の個数: 16

約数和(自身を含む): 24535440

約数和(自身を除く): 4622135

約数列:

[1, 5, 73, 89, 365, 445, 613, 3065, 6497, 32485, 44749, 54557, 223745, 272785, 3982661, 19913305]

約数ペア:

[(1, 19913305), (5, 3982661), (73, 272785), (89, 223745), (365, 54557), (445, 44749), (613, 32485), (3065, 6497)]