21115767

素因数分解:

$3^1\times {\mathrm{101}}^1\times {\mathrm{227}}^1\times {\mathrm{307}}^1$

素因数の和:638

約数の個数: 16

約数和(自身を含む): 28651392

約数和(自身を除く): 7535625

約数列:

[1, 3, 101, 227, 303, 307, 681, 921, 22927, 31007, 68781, 69689, 93021, 209067, 7038589, 21115767]

約数ペア:

[(1, 21115767), (3, 7038589), (101, 209067), (227, 93021), (303, 69689), (307, 68781), (681, 31007), (921, 22927)]