20090860

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11287}}^1$

素因数の和:11385

約数の個数: 24

約数和(自身を含む): 42668640

約数和(自身を除く): 22577780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 11287, 22574, 45148, 56435, 112870, 225740, 1004543, 2009086, 4018172, 5022715, 10045430, 20090860]

約数ペア:

[(1, 20090860), (2, 10045430), (4, 5022715), (5, 4018172), (10, 2009086), (20, 1004543), (89, 225740), (178, 112870), (356, 56435), (445, 45148), (890, 22574), (1780, 11287)]