25319260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{499}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 55440000

約数和(自身を除く): 30120740

約数列:

[1, 2, 4, 5, 10, 20, 43, 59, 86, 118, 172, 215, 236, 295, 430, 499, 590, 860, 998, 1180, 1996, 2495, 2537, 4990, 5074, 9980, 10148, 12685, 21457, 25370, 29441, 42914, 50740, 58882, 85828, 107285, 117764, 147205, 214570, 294410, 429140, 588820, 1265963, 2531926, 5063852, 6329815, 12659630, 25319260]

約数ペア:

[(1, 25319260), (2, 12659630), (4, 6329815), (5, 5063852), (10, 2531926), (20, 1265963), (43, 588820), (59, 429140), (86, 294410), (118, 214570), (172, 147205), (215, 117764), (236, 107285), (295, 85828), (430, 58882), (499, 50740), (590, 42914), (860, 29441), (998, 25370), (1180, 21457), (1996, 12685), (2495, 10148), (2537, 9980), (4990, 5074)]