25643780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{18059}}^1$

素因数の和:18139

約数の個数: 24

約数和(自身を含む): 54613440

約数和(自身を除く): 28969660

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 18059, 36118, 72236, 90295, 180590, 361180, 1282189, 2564378, 5128756, 6410945, 12821890, 25643780]

約数ペア:

[(1, 25643780), (2, 12821890), (4, 6410945), (5, 5128756), (10, 2564378), (20, 1282189), (71, 361180), (142, 180590), (284, 90295), (355, 72236), (710, 36118), (1420, 18059)]