280245

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:189

約数の個数: 32

約数和(自身を含む): 546048

約数和(自身を除く): 265803

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 157, 255, 357, 471, 595, 785, 1099, 1785, 2355, 2669, 3297, 5495, 8007, 13345, 16485, 18683, 40035, 56049, 93415, 280245]

約数ペア:

[(1, 280245), (3, 93415), (5, 56049), (7, 40035), (15, 18683), (17, 16485), (21, 13345), (35, 8007), (51, 5495), (85, 3297), (105, 2669), (119, 2355), (157, 1785), (255, 1099), (357, 785), (471, 595)]