72087020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{87911}}^1$

素因数の和:87961

約数の個数: 24

約数和(自身を含む): 155076768

約数和(自身を除く): 82989748

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 87911, 175822, 351644, 439555, 879110, 1758220, 3604351, 7208702, 14417404, 18021755, 36043510, 72087020]

約数ペア:

[(1, 72087020), (2, 36043510), (4, 18021755), (5, 14417404), (10, 7208702), (20, 3604351), (41, 1758220), (82, 879110), (164, 439555), (205, 351644), (410, 175822), (820, 87911)]