18391472

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{1259}}^1$

素因数の和:1361

約数の個数: 40

約数和(自身を含む): 39372480

約数和(自身を除く): 20981008

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 83, 88, 166, 176, 332, 664, 913, 1259, 1328, 1826, 2518, 3652, 5036, 7304, 10072, 13849, 14608, 20144, 27698, 55396, 104497, 110792, 208994, 221584, 417988, 835976, 1149467, 1671952, 2298934, 4597868, 9195736, 18391472]

約数ペア:

[(1, 18391472), (2, 9195736), (4, 4597868), (8, 2298934), (11, 1671952), (16, 1149467), (22, 835976), (44, 417988), (83, 221584), (88, 208994), (166, 110792), (176, 104497), (332, 55396), (664, 27698), (913, 20144), (1259, 14608), (1328, 13849), (1826, 10072), (2518, 7304), (3652, 5036)]