21744220

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{4549}}^1$

素因数の和:4797

約数の個数: 24

約数和(自身を含む): 45864000

約数和(自身を除く): 24119780

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 4549, 4780, 9098, 18196, 22745, 45490, 90980, 1087211, 2174422, 4348844, 5436055, 10872110, 21744220]

約数ペア:

[(1, 21744220), (2, 10872110), (4, 5436055), (5, 4348844), (10, 2174422), (20, 1087211), (239, 90980), (478, 45490), (956, 22745), (1195, 18196), (2390, 9098), (4549, 4780)]