866860

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{487}}^1$

素因数の和:585

約数の個数: 24

約数和(自身を含む): 1844640

約数和(自身を除く): 977780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 487, 890, 974, 1780, 1948, 2435, 4870, 9740, 43343, 86686, 173372, 216715, 433430, 866860]

約数ペア:

[(1, 866860), (2, 433430), (4, 216715), (5, 173372), (10, 86686), (20, 43343), (89, 9740), (178, 4870), (356, 2435), (445, 1948), (487, 1780), (890, 974)]