21656620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37339}}^1$

素因数の和:37377

約数の個数: 24

約数和(自身を含む): 47048400

約数和(自身を除く): 25391780

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 37339, 74678, 149356, 186695, 373390, 746780, 1082831, 2165662, 4331324, 5414155, 10828310, 21656620]

約数ペア:

[(1, 21656620), (2, 10828310), (4, 5414155), (5, 4331324), (10, 2165662), (20, 1082831), (29, 746780), (58, 373390), (116, 186695), (145, 149356), (290, 74678), (580, 37339)]