218670621

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{13913}}^1$

素因数の和:13973

約数の個数: 24

約数和(自身を含む): 325921536

約数和(自身を除く): 107250915

約数列:

[1, 3, 13, 31, 39, 93, 169, 403, 507, 1209, 5239, 13913, 15717, 41739, 180869, 431303, 542607, 1293909, 2351297, 5606939, 7053891, 16820817, 72890207, 218670621]

約数ペア:

[(1, 218670621), (3, 72890207), (13, 16820817), (31, 7053891), (39, 5606939), (93, 2351297), (169, 1293909), (403, 542607), (507, 431303), (1209, 180869), (5239, 41739), (13913, 15717)]