20215505

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{4751}}^1$

素因数の和:4816

約数の個数: 16

約数和(自身を含む): 26002944

約数和(自身を除く): 5787439

約数列:

[1, 5, 23, 37, 115, 185, 851, 4255, 4751, 23755, 109273, 175787, 546365, 878935, 4043101, 20215505]

約数ペア:

[(1, 20215505), (5, 4043101), (23, 878935), (37, 546365), (115, 175787), (185, 109273), (851, 23755), (4255, 4751)]