21022220

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{6961}}^1$

素因数の和:7121

約数の個数: 24

約数和(自身を含む): 44445408

約数和(自身を除く): 23423188

約数列:

[1, 2, 4, 5, 10, 20, 151, 302, 604, 755, 1510, 3020, 6961, 13922, 27844, 34805, 69610, 139220, 1051111, 2102222, 4204444, 5255555, 10511110, 21022220]

約数ペア:

[(1, 21022220), (2, 10511110), (4, 5255555), (5, 4204444), (10, 2102222), (20, 1051111), (151, 139220), (302, 69610), (604, 34805), (755, 27844), (1510, 13922), (3020, 6961)]