21005844

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{40709}}^1$

素因数の和:40759

約数の個数: 24

約数和(自身を含む): 50154720

約数和(自身を除く): 29148876

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 258, 516, 40709, 81418, 122127, 162836, 244254, 488508, 1750487, 3500974, 5251461, 7001948, 10502922, 21005844]

約数ペア:

[(1, 21005844), (2, 10502922), (3, 7001948), (4, 5251461), (6, 3500974), (12, 1750487), (43, 488508), (86, 244254), (129, 162836), (172, 122127), (258, 81418), (516, 40709)]