20870997

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{26861}}^1$

素因数の和:26908

約数の個数: 16

約数和(自身を含む): 32664192

約数和(自身を除く): 11793195

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 26861, 80583, 188027, 564081, 993857, 2981571, 6956999, 20870997]

約数ペア:

[(1, 20870997), (3, 6956999), (7, 2981571), (21, 993857), (37, 564081), (111, 188027), (259, 80583), (777, 26861)]