20408050

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31397}}^1$

素因数の和:31422

約数の個数: 24

約数和(自身を含む): 40880196

約数和(自身を除く): 20472146

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 31397, 62794, 156985, 313970, 408161, 784925, 816322, 1569850, 2040805, 4081610, 10204025, 20408050]

約数ペア:

[(1, 20408050), (2, 10204025), (5, 4081610), (10, 2040805), (13, 1569850), (25, 816322), (26, 784925), (50, 408161), (65, 313970), (130, 156985), (325, 62794), (650, 31397)]