19165840

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2239}}^1$

素因数の和:2359

約数の個数: 40

約数和(自身を含む): 44997120

約数和(自身を除く): 25831280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2140, 2239, 4280, 4478, 8560, 8956, 11195, 17912, 22390, 35824, 44780, 89560, 179120, 239573, 479146, 958292, 1197865, 1916584, 2395730, 3833168, 4791460, 9582920, 19165840]

約数ペア:

[(1, 19165840), (2, 9582920), (4, 4791460), (5, 3833168), (8, 2395730), (10, 1916584), (16, 1197865), (20, 958292), (40, 479146), (80, 239573), (107, 179120), (214, 89560), (428, 44780), (535, 35824), (856, 22390), (1070, 17912), (1712, 11195), (2140, 8956), (2239, 8560), (4280, 4478)]