20172215

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{421}}^1$

素因数の和:507

約数の個数: 24

約数和(自身を含む): 28500192

約数和(自身を除く): 8327977

約数列:

[1, 5, 7, 35, 37, 185, 259, 421, 1295, 1369, 2105, 2947, 6845, 9583, 14735, 15577, 47915, 77885, 109039, 545195, 576349, 2881745, 4034443, 20172215]

約数ペア:

[(1, 20172215), (5, 4034443), (7, 2881745), (35, 576349), (37, 545195), (185, 109039), (259, 77885), (421, 47915), (1295, 15577), (1369, 14735), (2105, 9583), (2947, 6845)]