21735580

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{12211}}^1$

素因数の和:12309

約数の個数: 24

約数和(自身を含む): 46161360

約数和(自身を除く): 24425780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 12211, 24422, 48844, 61055, 122110, 244220, 1086779, 2173558, 4347116, 5433895, 10867790, 21735580]

約数ペア:

[(1, 21735580), (2, 10867790), (4, 5433895), (5, 4347116), (10, 2173558), (20, 1086779), (89, 244220), (178, 122110), (356, 61055), (445, 48844), (890, 24422), (1780, 12211)]