20472543

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3571}}^1$

素因数の和:3604

約数の個数: 36

約数和(自身を含む): 37055928

約数和(自身を除く): 16583385

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 441, 637, 819, 1911, 3571, 5733, 10713, 24997, 32139, 46423, 74991, 139269, 174979, 224973, 324961, 417807, 524937, 974883, 1574811, 2274727, 2924649, 6824181, 20472543]

約数ペア:

[(1, 20472543), (3, 6824181), (7, 2924649), (9, 2274727), (13, 1574811), (21, 974883), (39, 524937), (49, 417807), (63, 324961), (91, 224973), (117, 174979), (147, 139269), (273, 74991), (441, 46423), (637, 32139), (819, 24997), (1911, 10713), (3571, 5733)]