18913743

素因数分解:

$3^4\times {\mathrm{239}}^1\times {\mathrm{977}}^1$

素因数の和:1228

約数の個数: 20

約数和(自身を含む): 28401120

約数和(自身を除く): 9487377

約数列:

[1, 3, 9, 27, 81, 239, 717, 977, 2151, 2931, 6453, 8793, 19359, 26379, 79137, 233503, 700509, 2101527, 6304581, 18913743]

約数ペア:

[(1, 18913743), (3, 6304581), (9, 2101527), (27, 700509), (81, 233503), (239, 79137), (717, 26379), (977, 19359), (2151, 8793), (2931, 6453)]