31272605

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{311}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 49330944

約数和(自身を除く): 18058339

約数列:

[1, 5, 7, 13, 17, 35, 65, 85, 91, 119, 169, 221, 311, 455, 595, 845, 1105, 1183, 1547, 1555, 2177, 2873, 4043, 5287, 5915, 7735, 10885, 14365, 20111, 20215, 26435, 28301, 37009, 52559, 68731, 100555, 141505, 185045, 262795, 343655, 367913, 481117, 893503, 1839565, 2405585, 4467515, 6254521, 31272605]

約数ペア:

[(1, 31272605), (5, 6254521), (7, 4467515), (13, 2405585), (17, 1839565), (35, 893503), (65, 481117), (85, 367913), (91, 343655), (119, 262795), (169, 185045), (221, 141505), (311, 100555), (455, 68731), (595, 52559), (845, 37009), (1105, 28301), (1183, 26435), (1547, 20215), (1555, 20111), (2177, 14365), (2873, 10885), (4043, 7735), (5287, 5915)]