18188631

素因数分解:

$3^4\times {\mathrm{431}}^1\times {\mathrm{521}}^1$

素因数の和:964

約数の個数: 20

約数和(自身を含む): 27285984

約数和(自身を除く): 9097353

約数列:

[1, 3, 9, 27, 81, 431, 521, 1293, 1563, 3879, 4689, 11637, 14067, 34911, 42201, 224551, 673653, 2020959, 6062877, 18188631]

約数ペア:

[(1, 18188631), (3, 6062877), (9, 2020959), (27, 673653), (81, 224551), (431, 42201), (521, 34911), (1293, 14067), (1563, 11637), (3879, 4689)]