278421

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1$

素因数の和:97

約数の個数: 24

約数和(自身を含む): 446880

約数和(自身を除く): 168459

約数列:

[1, 3, 11, 13, 33, 39, 59, 121, 143, 177, 363, 429, 649, 767, 1573, 1947, 2301, 4719, 7139, 8437, 21417, 25311, 92807, 278421]

約数ペア:

[(1, 278421), (3, 92807), (11, 25311), (13, 21417), (33, 8437), (39, 7139), (59, 4719), (121, 2301), (143, 1947), (177, 1573), (363, 767), (429, 649)]