489947815

素因数分解:

$5^1\times 7^2\times {\mathrm{401}}^1\times {\mathrm{4987}}^1$

素因数の和:5407

約数の個数: 24

約数和(自身を含む): 685770192

約数和(自身を除く): 195822377

約数列:

[1, 5, 7, 35, 49, 245, 401, 2005, 2807, 4987, 14035, 19649, 24935, 34909, 98245, 174545, 244363, 1221815, 1999787, 9998935, 13998509, 69992545, 97989563, 489947815]

約数ペア:

[(1, 489947815), (5, 97989563), (7, 69992545), (35, 13998509), (49, 9998935), (245, 1999787), (401, 1221815), (2005, 244363), (2807, 174545), (4987, 98245), (14035, 34909), (19649, 24935)]