20509090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{10103}}^1$

素因数の和:10146

約数の個数: 32

約数和(自身を含む): 43649280

約数和(自身を除く): 23140190

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 145, 203, 290, 406, 1015, 2030, 10103, 20206, 50515, 70721, 101030, 141442, 292987, 353605, 585974, 707210, 1464935, 2050909, 2929870, 4101818, 10254545, 20509090]

約数ペア:

[(1, 20509090), (2, 10254545), (5, 4101818), (7, 2929870), (10, 2050909), (14, 1464935), (29, 707210), (35, 585974), (58, 353605), (70, 292987), (145, 141442), (203, 101030), (290, 70721), (406, 50515), (1015, 20206), (2030, 10103)]