18021237

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{2671}}^1$

素因数の和:2860

約数の個数: 16

約数和(自身を含む): 26035968

約数和(自身を除く): 8014731

約数列:

[1, 3, 13, 39, 173, 519, 2249, 2671, 6747, 8013, 34723, 104169, 462083, 1386249, 6007079, 18021237]

約数ペア:

[(1, 18021237), (3, 6007079), (13, 1386249), (39, 462083), (173, 104169), (519, 34723), (2249, 8013), (2671, 6747)]