18803408

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90401}}^1$

素因数の和:90422

約数の個数: 20

約数和(自身を含む): 39234468

約数和(自身を除く): 20431060

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90401, 180802, 361604, 723208, 1175213, 1446416, 2350426, 4700852, 9401704, 18803408]

約数ペア:

[(1, 18803408), (2, 9401704), (4, 4700852), (8, 2350426), (13, 1446416), (16, 1175213), (26, 723208), (52, 361604), (104, 180802), (208, 90401)]