81101804

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{971}}^1$

素因数の和:1158

約数の個数: 48

約数和(自身を含む): 172005120

約数和(自身を除く): 90903316

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 157, 266, 314, 532, 628, 971, 1099, 1942, 2198, 2983, 3884, 4396, 5966, 6797, 11932, 13594, 18449, 20881, 27188, 36898, 41762, 73796, 83524, 129143, 152447, 258286, 304894, 516572, 609788, 1067129, 2134258, 2896493, 4268516, 5792986, 11585972, 20275451, 40550902, 81101804]

約数ペア:

[(1, 81101804), (2, 40550902), (4, 20275451), (7, 11585972), (14, 5792986), (19, 4268516), (28, 2896493), (38, 2134258), (76, 1067129), (133, 609788), (157, 516572), (266, 304894), (314, 258286), (532, 152447), (628, 129143), (971, 83524), (1099, 73796), (1942, 41762), (2198, 36898), (2983, 27188), (3884, 20881), (4396, 18449), (5966, 13594), (6797, 11932)]