181640560

素因数分解:

$2^4\times 5^1\times {\mathrm{2270507}}^1$

素因数の和:2270520

約数の個数: 20

約数和(自身を含む): 422314488

約数和(自身を除く): 240673928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2270507, 4541014, 9082028, 11352535, 18164056, 22705070, 36328112, 45410140, 90820280, 181640560]

約数ペア:

[(1, 181640560), (2, 90820280), (4, 45410140), (5, 36328112), (8, 22705070), (10, 18164056), (16, 11352535), (20, 9082028), (40, 4541014), (80, 2270507)]