20971668

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1559}}^1$

素因数の和:1644

約数の個数: 48

約数和(自身を含む): 52416000

約数和(自身を除く): 31444332

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 59, 76, 114, 118, 177, 228, 236, 354, 708, 1121, 1559, 2242, 3118, 3363, 4484, 4677, 6236, 6726, 9354, 13452, 18708, 29621, 59242, 88863, 91981, 118484, 177726, 183962, 275943, 355452, 367924, 551886, 1103772, 1747639, 3495278, 5242917, 6990556, 10485834, 20971668]

約数ペア:

[(1, 20971668), (2, 10485834), (3, 6990556), (4, 5242917), (6, 3495278), (12, 1747639), (19, 1103772), (38, 551886), (57, 367924), (59, 355452), (76, 275943), (114, 183962), (118, 177726), (177, 118484), (228, 91981), (236, 88863), (354, 59242), (708, 29621), (1121, 18708), (1559, 13452), (2242, 9354), (3118, 6726), (3363, 6236), (4484, 4677)]