20631550

素因数分解:

$2^1\times 5^2\times {\mathrm{449}}^1\times {\mathrm{919}}^1$

素因数の和:1380

約数の個数: 24

約数和(自身を含む): 38502000

約数和(自身を除く): 17870450

約数列:

[1, 2, 5, 10, 25, 50, 449, 898, 919, 1838, 2245, 4490, 4595, 9190, 11225, 22450, 22975, 45950, 412631, 825262, 2063155, 4126310, 10315775, 20631550]

約数ペア:

[(1, 20631550), (2, 10315775), (5, 4126310), (10, 2063155), (25, 825262), (50, 412631), (449, 45950), (898, 22975), (919, 22450), (1838, 11225), (2245, 9190), (4490, 4595)]