26666665

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{4001}}^1$

素因数の和:4080

約数の個数: 16

約数和(自身を含む): 33808896

約数和(自身を除く): 7142231

約数列:

[1, 5, 31, 43, 155, 215, 1333, 4001, 6665, 20005, 124031, 172043, 620155, 860215, 5333333, 26666665]

約数ペア:

[(1, 26666665), (5, 5333333), (31, 860215), (43, 620155), (155, 172043), (215, 124031), (1333, 20005), (4001, 6665)]