18173950

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:241

約数の個数: 48

約数和(自身を含む): 35354880

約数和(自身を除く): 17180930

約数列:

[1, 2, 5, 10, 25, 43, 50, 79, 86, 107, 158, 214, 215, 395, 430, 535, 790, 1070, 1075, 1975, 2150, 2675, 3397, 3950, 4601, 5350, 6794, 8453, 9202, 16906, 16985, 23005, 33970, 42265, 46010, 84530, 84925, 115025, 169850, 211325, 230050, 363479, 422650, 726958, 1817395, 3634790, 9086975, 18173950]

約数ペア:

[(1, 18173950), (2, 9086975), (5, 3634790), (10, 1817395), (25, 726958), (43, 422650), (50, 363479), (79, 230050), (86, 211325), (107, 169850), (158, 115025), (214, 84925), (215, 84530), (395, 46010), (430, 42265), (535, 33970), (790, 23005), (1070, 16985), (1075, 16906), (1975, 9202), (2150, 8453), (2675, 6794), (3397, 5350), (3950, 4601)]