18627813

素因数分解:

$3^4\times {\mathrm{151}}^1\times {\mathrm{1523}}^1$

素因数の和:1686

約数の個数: 20

約数和(自身を含む): 28029408

約数和(自身を除く): 9401595

約数列:

[1, 3, 9, 27, 81, 151, 453, 1359, 1523, 4077, 4569, 12231, 13707, 41121, 123363, 229973, 689919, 2069757, 6209271, 18627813]

約数ペア:

[(1, 18627813), (3, 6209271), (9, 2069757), (27, 689919), (81, 229973), (151, 123363), (453, 41121), (1359, 13707), (1523, 12231), (4077, 4569)]