638396802

素因数分解:

$2^1\times 3^4\times {\mathrm{3940721}}^1$

素因数の和:3940735

約数の個数: 20

約数和(自身を含む): 1430482086

約数和(自身を除く): 792085284

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 3940721, 7881442, 11822163, 23644326, 35466489, 70932978, 106399467, 212798934, 319198401, 638396802]

約数ペア:

[(1, 638396802), (2, 319198401), (3, 212798934), (6, 106399467), (9, 70932978), (18, 35466489), (27, 23644326), (54, 11822163), (81, 7881442), (162, 3940721)]