208095620

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{21191}}^1$

素因数の和:21691

約数の個数: 24

約数和(自身を含む): 437911488

約数和(自身を除く): 229815868

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 9820, 21191, 42382, 84764, 105955, 211910, 423820, 10404781, 20809562, 41619124, 52023905, 104047810, 208095620]

約数ペア:

[(1, 208095620), (2, 104047810), (4, 52023905), (5, 41619124), (10, 20809562), (20, 10404781), (491, 423820), (982, 211910), (1964, 105955), (2455, 84764), (4910, 42382), (9820, 21191)]