20868999

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1\times {\mathrm{821}}^1$

素因数の和:1090

約数の個数: 16

約数和(自身を含む): 28737120

約数和(自身を除く): 7868121

約数列:

[1, 3, 37, 111, 229, 687, 821, 2463, 8473, 25419, 30377, 91131, 188009, 564027, 6956333, 20868999]

約数ペア:

[(1, 20868999), (3, 6956333), (37, 564027), (111, 188009), (229, 91131), (687, 30377), (821, 25419), (2463, 8473)]