18679888

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1429}}^1$

素因数の和:1499

約数の個数: 40

約数和(自身を含む): 39010400

約数和(自身を除く): 20330512

約数列:

[1, 2, 4, 8, 16, 19, 38, 43, 76, 86, 152, 172, 304, 344, 688, 817, 1429, 1634, 2858, 3268, 5716, 6536, 11432, 13072, 22864, 27151, 54302, 61447, 108604, 122894, 217208, 245788, 434416, 491576, 983152, 1167493, 2334986, 4669972, 9339944, 18679888]

約数ペア:

[(1, 18679888), (2, 9339944), (4, 4669972), (8, 2334986), (16, 1167493), (19, 983152), (38, 491576), (43, 434416), (76, 245788), (86, 217208), (152, 122894), (172, 108604), (304, 61447), (344, 54302), (688, 27151), (817, 22864), (1429, 13072), (1634, 11432), (2858, 6536), (3268, 5716)]