20342440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11827}}^1$

素因数の和:11881

約数の個数: 32

約数和(自身を含む): 46838880

約数和(自身を除く): 26496440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11827, 23654, 47308, 59135, 94616, 118270, 236540, 473080, 508561, 1017122, 2034244, 2542805, 4068488, 5085610, 10171220, 20342440]

約数ペア:

[(1, 20342440), (2, 10171220), (4, 5085610), (5, 4068488), (8, 2542805), (10, 2034244), (20, 1017122), (40, 508561), (43, 473080), (86, 236540), (172, 118270), (215, 94616), (344, 59135), (430, 47308), (860, 23654), (1720, 11827)]