217939455

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{156229}}^1$

素因数の和:156271

約数の個数: 24

約数和(自身を含む): 389950080

約数和(自身を除く): 172010625

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 156229, 468687, 781145, 1406061, 2343435, 4843099, 7030305, 14529297, 24215495, 43587891, 72646485, 217939455]

約数ペア:

[(1, 217939455), (3, 72646485), (5, 43587891), (9, 24215495), (15, 14529297), (31, 7030305), (45, 4843099), (93, 2343435), (155, 1406061), (279, 781145), (465, 468687), (1395, 156229)]