20464815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2909}}^1$

素因数の和:2991

約数の個数: 32

約数和(自身を含む): 37992960

約数和(自身を除く): 17528145

約数列:

[1, 3, 5, 7, 15, 21, 35, 67, 105, 201, 335, 469, 1005, 1407, 2345, 2909, 7035, 8727, 14545, 20363, 43635, 61089, 101815, 194903, 305445, 584709, 974515, 1364321, 2923545, 4092963, 6821605, 20464815]

約数ペア:

[(1, 20464815), (3, 6821605), (5, 4092963), (7, 2923545), (15, 1364321), (21, 974515), (35, 584709), (67, 305445), (105, 194903), (201, 101815), (335, 61089), (469, 43635), (1005, 20363), (1407, 14545), (2345, 8727), (2909, 7035)]