21118527

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{63419}}^1$

素因数の和:63462

約数の個数: 12

約数和(自身を含む): 31329480

約数和(自身を除く): 10210953

約数列:

[1, 3, 9, 37, 111, 333, 63419, 190257, 570771, 2346503, 7039509, 21118527]

約数ペア:

[(1, 21118527), (3, 7039509), (9, 2346503), (37, 570771), (111, 190257), (333, 63419)]