18994743

素因数分解:

$3^4\times {\mathrm{151}}^1\times {\mathrm{1553}}^1$

素因数の和:1716

約数の個数: 20

約数和(自身を含む): 28581168

約数和(自身を除く): 9586425

約数列:

[1, 3, 9, 27, 81, 151, 453, 1359, 1553, 4077, 4659, 12231, 13977, 41931, 125793, 234503, 703509, 2110527, 6331581, 18994743]

約数ペア:

[(1, 18994743), (3, 6331581), (9, 2110527), (27, 703509), (81, 234503), (151, 125793), (453, 41931), (1359, 13977), (1553, 12231), (4077, 4659)]