20128743

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{3709}}^1$

素因数の和:3788

約数の個数: 20

約数和(自身を含む): 30525880

約数和(自身を除く): 10397137

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 3709, 5427, 11127, 33381, 100143, 248503, 300429, 745509, 2236527, 6709581, 20128743]

約数ペア:

[(1, 20128743), (3, 6709581), (9, 2236527), (27, 745509), (67, 300429), (81, 248503), (201, 100143), (603, 33381), (1809, 11127), (3709, 5427)]