18967347

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 32880640

約数和(自身を除く): 13913293

約数列:

[1, 3, 7, 9, 21, 37, 63, 79, 103, 111, 237, 259, 309, 333, 553, 711, 721, 777, 927, 1659, 2163, 2331, 2923, 3811, 4977, 6489, 8137, 8769, 11433, 20461, 24411, 26307, 26677, 34299, 56959, 61383, 73233, 80031, 170877, 184149, 240093, 301069, 512631, 903207, 2107483, 2709621, 6322449, 18967347]

約数ペア:

[(1, 18967347), (3, 6322449), (7, 2709621), (9, 2107483), (21, 903207), (37, 512631), (63, 301069), (79, 240093), (103, 184149), (111, 170877), (237, 80031), (259, 73233), (309, 61383), (333, 56959), (553, 34299), (711, 26677), (721, 26307), (777, 24411), (927, 20461), (1659, 11433), (2163, 8769), (2331, 8137), (2923, 6489), (3811, 4977)]