20878101

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{20899}}^1$

素因数の和:20945

約数の個数: 16

約数和(自身を含む): 31768000

約数和(自身を除く): 10889899

約数列:

[1, 3, 9, 27, 37, 111, 333, 999, 20899, 62697, 188091, 564273, 773263, 2319789, 6959367, 20878101]

約数ペア:

[(1, 20878101), (3, 6959367), (9, 2319789), (27, 773263), (37, 564273), (111, 188091), (333, 62697), (999, 20899)]