40422020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{22709}}^1$

素因数の和:22807

約数の個数: 24

約数和(自身を含む): 85843800

約数和(自身を除く): 45421780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 22709, 45418, 90836, 113545, 227090, 454180, 2021101, 4042202, 8084404, 10105505, 20211010, 40422020]

約数ペア:

[(1, 40422020), (2, 20211010), (4, 10105505), (5, 8084404), (10, 4042202), (20, 2021101), (89, 454180), (178, 227090), (356, 113545), (445, 90836), (890, 45418), (1780, 22709)]