18780207

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{739}}^1$

素因数の和:982

約数の個数: 16

約数和(自身を含む): 25787520

約数和(自身を除く): 7007313

約数列:

[1, 3, 43, 129, 197, 591, 739, 2217, 8471, 25413, 31777, 95331, 145583, 436749, 6260069, 18780207]

約数ペア:

[(1, 18780207), (3, 6260069), (43, 436749), (129, 145583), (197, 95331), (591, 31777), (739, 25413), (2217, 8471)]