25761440

素因数分解:

$2^5\times 5^1\times {\mathrm{161009}}^1$

素因数の和:161024

約数の個数: 24

約数和(自身を含む): 60861780

約数和(自身を除く): 35100340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 161009, 322018, 644036, 805045, 1288072, 1610090, 2576144, 3220180, 5152288, 6440360, 12880720, 25761440]

約数ペア:

[(1, 25761440), (2, 12880720), (4, 6440360), (5, 5152288), (8, 3220180), (10, 2576144), (16, 1610090), (20, 1288072), (32, 805045), (40, 644036), (80, 322018), (160, 161009)]