661966165

素因数分解:

$5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{179}}^1\times {\mathrm{673}}^1$

素因数の和:1021

約数の個数: 32

約数和(自身を含む): 920090880

約数和(自身を除く): 258124715

約数列:

[1, 5, 7, 35, 157, 179, 673, 785, 895, 1099, 1253, 3365, 4711, 5495, 6265, 23555, 28103, 105661, 120467, 140515, 196721, 528305, 602335, 739627, 843269, 983605, 3698135, 4216345, 18913319, 94566595, 132393233, 661966165]

約数ペア:

[(1, 661966165), (5, 132393233), (7, 94566595), (35, 18913319), (157, 4216345), (179, 3698135), (673, 983605), (785, 843269), (895, 739627), (1099, 602335), (1253, 528305), (3365, 196721), (4711, 140515), (5495, 120467), (6265, 105661), (23555, 28103)]