21802780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37591}}^1$

素因数の和:37629

約数の個数: 24

約数和(自身を含む): 47365920

約数和(自身を除く): 25563140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 37591, 75182, 150364, 187955, 375910, 751820, 1090139, 2180278, 4360556, 5450695, 10901390, 21802780]

約数ペア:

[(1, 21802780), (2, 10901390), (4, 5450695), (5, 4360556), (10, 2180278), (20, 1090139), (29, 751820), (58, 375910), (116, 187955), (145, 150364), (290, 75182), (580, 37591)]