19978144

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{14519}}^1$

素因数の和:14572

約数の個数: 24

約数和(自身を含む): 40249440

約数和(自身を除く): 20271296

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376, 14519, 29038, 58076, 116152, 232304, 464608, 624317, 1248634, 2497268, 4994536, 9989072, 19978144]

約数ペア:

[(1, 19978144), (2, 9989072), (4, 4994536), (8, 2497268), (16, 1248634), (32, 624317), (43, 464608), (86, 232304), (172, 116152), (344, 58076), (688, 29038), (1376, 14519)]