1808973

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{971}}^1$

素因数の和:1006

約数の個数: 20

約数和(自身を含む): 2822688

約数和(自身を除く): 1013715

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 971, 1863, 2913, 8739, 22333, 26217, 66999, 78651, 200997, 602991, 1808973]

約数ペア:

[(1, 1808973), (3, 602991), (9, 200997), (23, 78651), (27, 66999), (69, 26217), (81, 22333), (207, 8739), (621, 2913), (971, 1863)]