20878615

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{571}}^1$

素因数の和:750

約数の個数: 16

約数和(自身を含む): 25698816

約数和(自身を除く): 4820201

約数列:

[1, 5, 71, 103, 355, 515, 571, 2855, 7313, 36565, 40541, 58813, 202705, 294065, 4175723, 20878615]

約数ペア:

[(1, 20878615), (5, 4175723), (71, 294065), (103, 202705), (355, 58813), (515, 40541), (571, 36565), (2855, 7313)]