159787280

素因数分解:

$2^4\times 5^1\times {\mathrm{1997341}}^1$

素因数の和:1997354

約数の個数: 20

約数和(自身を含む): 371505612

約数和(自身を除く): 211718332

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1997341, 3994682, 7989364, 9986705, 15978728, 19973410, 31957456, 39946820, 79893640, 159787280]

約数ペア:

[(1, 159787280), (2, 79893640), (4, 39946820), (5, 31957456), (8, 19973410), (10, 15978728), (16, 9986705), (20, 7989364), (40, 3994682), (80, 1997341)]