400331380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{488209}}^1$

素因数の和:488259

約数の個数: 24

約数和(自身を含む): 861202440

約数和(自身を除く): 460871060

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 488209, 976418, 1952836, 2441045, 4882090, 9764180, 20016569, 40033138, 80066276, 100082845, 200165690, 400331380]

約数ペア:

[(1, 400331380), (2, 200165690), (4, 100082845), (5, 80066276), (10, 40033138), (20, 20016569), (41, 9764180), (82, 4882090), (164, 2441045), (205, 1952836), (410, 976418), (820, 488209)]