18572728

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:212

約数の個数: 48

約数和(自身を含む): 37719000

約数和(自身を除く): 19146272

約数列:

[1, 2, 4, 8, 19, 38, 59, 76, 109, 118, 152, 218, 236, 361, 436, 472, 722, 872, 1121, 1444, 2071, 2242, 2888, 4142, 4484, 6431, 8284, 8968, 12862, 16568, 21299, 25724, 39349, 42598, 51448, 78698, 85196, 122189, 157396, 170392, 244378, 314792, 488756, 977512, 2321591, 4643182, 9286364, 18572728]

約数ペア:

[(1, 18572728), (2, 9286364), (4, 4643182), (8, 2321591), (19, 977512), (38, 488756), (59, 314792), (76, 244378), (109, 170392), (118, 157396), (152, 122189), (218, 85196), (236, 78698), (361, 51448), (436, 42598), (472, 39349), (722, 25724), (872, 21299), (1121, 16568), (1444, 12862), (2071, 8968), (2242, 8284), (2888, 6431), (4142, 4484)]