20730978

素因数分解:

$2^1\times 3^4\times {\mathrm{73}}^1\times {\mathrm{1753}}^1$

素因数の和:1840

約数の個数: 40

約数和(自身を含む): 47115948

約数和(自身を除く): 26384970

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 73, 81, 146, 162, 219, 438, 657, 1314, 1753, 1971, 3506, 3942, 5259, 5913, 10518, 11826, 15777, 31554, 47331, 94662, 127969, 141993, 255938, 283986, 383907, 767814, 1151721, 2303442, 3455163, 6910326, 10365489, 20730978]

約数ペア:

[(1, 20730978), (2, 10365489), (3, 6910326), (6, 3455163), (9, 2303442), (18, 1151721), (27, 767814), (54, 383907), (73, 283986), (81, 255938), (146, 141993), (162, 127969), (219, 94662), (438, 47331), (657, 31554), (1314, 15777), (1753, 11826), (1971, 10518), (3506, 5913), (3942, 5259)]