208387647

素因数分解:

$3^4\times {\mathrm{13}}^3\times {\mathrm{1171}}^1$

素因数の和:1222

約数の個数: 40

約数和(自身を含む): 337512560

約数和(自身を除く): 129124913

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 169, 351, 507, 1053, 1171, 1521, 2197, 3513, 4563, 6591, 10539, 13689, 15223, 19773, 31617, 45669, 59319, 94851, 137007, 177957, 197899, 411021, 593697, 1233063, 1781091, 2572687, 5343273, 7718061, 16029819, 23154183, 69462549, 208387647]

約数ペア:

[(1, 208387647), (3, 69462549), (9, 23154183), (13, 16029819), (27, 7718061), (39, 5343273), (81, 2572687), (117, 1781091), (169, 1233063), (351, 593697), (507, 411021), (1053, 197899), (1171, 177957), (1521, 137007), (2197, 94851), (3513, 59319), (4563, 45669), (6591, 31617), (10539, 19773), (13689, 15223)]