18778905

素因数分解:

$3^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{1231}}^1$

素因数の和:1358

約数の個数: 32

約数和(自身を含む): 33707520

約数和(自身を除く): 14928615

約数列:

[1, 3, 5, 9, 15, 27, 45, 113, 135, 339, 565, 1017, 1231, 1695, 3051, 3693, 5085, 6155, 11079, 15255, 18465, 33237, 55395, 139103, 166185, 417309, 695515, 1251927, 2086545, 3755781, 6259635, 18778905]

約数ペア:

[(1, 18778905), (3, 6259635), (5, 3755781), (9, 2086545), (15, 1251927), (27, 695515), (45, 417309), (113, 166185), (135, 139103), (339, 55395), (565, 33237), (1017, 18465), (1231, 15255), (1695, 11079), (3051, 6155), (3693, 5085)]