4900180

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{499}}^1$

素因数の和:999

約数の個数: 24

約数和(自身を含む): 10332000

約数和(自身を除く): 5431820

約数列:

[1, 2, 4, 5, 10, 20, 491, 499, 982, 998, 1964, 1996, 2455, 2495, 4910, 4990, 9820, 9980, 245009, 490018, 980036, 1225045, 2450090, 4900180]

約数ペア:

[(1, 4900180), (2, 2450090), (4, 1225045), (5, 980036), (10, 490018), (20, 245009), (491, 9980), (499, 9820), (982, 4990), (998, 4910), (1964, 2495), (1996, 2455)]