20197775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2143}}^1$

素因数の和:2195

約数の個数: 24

約数和(自身を含む): 27914880

約数和(自身を除く): 7717105

約数列:

[1, 5, 13, 25, 29, 65, 145, 325, 377, 725, 1885, 2143, 9425, 10715, 27859, 53575, 62147, 139295, 310735, 696475, 807911, 1553675, 4039555, 20197775]

約数ペア:

[(1, 20197775), (5, 4039555), (13, 1553675), (25, 807911), (29, 696475), (65, 310735), (145, 139295), (325, 62147), (377, 53575), (725, 27859), (1885, 10715), (2143, 9425)]