20420475

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{8783}}^1$

素因数の和:8827

約数の個数: 24

約数和(自身を含む): 34854912

約数和(自身を除く): 14434437

約数列:

[1, 3, 5, 15, 25, 31, 75, 93, 155, 465, 775, 2325, 8783, 26349, 43915, 131745, 219575, 272273, 658725, 816819, 1361365, 4084095, 6806825, 20420475]

約数ペア:

[(1, 20420475), (3, 6806825), (5, 4084095), (15, 1361365), (25, 816819), (31, 658725), (75, 272273), (93, 219575), (155, 131745), (465, 43915), (775, 26349), (2325, 8783)]