20401550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31387}}^1$

素因数の和:31412

約数の個数: 24

約数和(自身を含む): 40867176

約数和(自身を除く): 20465626

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 31387, 62774, 156935, 313870, 408031, 784675, 816062, 1569350, 2040155, 4080310, 10200775, 20401550]

約数ペア:

[(1, 20401550), (2, 10200775), (5, 4080310), (10, 2040155), (13, 1569350), (25, 816062), (26, 784675), (50, 408031), (65, 313870), (130, 156935), (325, 62774), (650, 31387)]