17921409

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{3907}}^1$

素因数の和:4060

約数の個数: 16

約数和(自身を含む): 26261760

約数和(自身を除く): 8340351

約数列:

[1, 3, 11, 33, 139, 417, 1529, 3907, 4587, 11721, 42977, 128931, 543073, 1629219, 5973803, 17921409]

約数ペア:

[(1, 17921409), (3, 5973803), (11, 1629219), (33, 543073), (139, 128931), (417, 42977), (1529, 11721), (3907, 4587)]