200421290

素因数分解:

$2^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{40819}}^1$

素因数の和:41317

約数の個数: 16

約数和(自身を含む): 361501920

約数和(自身を除く): 161080630

約数列:

[1, 2, 5, 10, 491, 982, 2455, 4910, 40819, 81638, 204095, 408190, 20042129, 40084258, 100210645, 200421290]

約数ペア:

[(1, 200421290), (2, 100210645), (5, 40084258), (10, 20042129), (491, 408190), (982, 204095), (2455, 81638), (4910, 40819)]