19886560

素因数分解:

$2^5\times 5^1\times {\mathrm{124291}}^1$

素因数の和:124306

約数の個数: 24

約数和(自身を含む): 46982376

約数和(自身を除く): 27095816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 124291, 248582, 497164, 621455, 994328, 1242910, 1988656, 2485820, 3977312, 4971640, 9943280, 19886560]

約数ペア:

[(1, 19886560), (2, 9943280), (4, 4971640), (5, 3977312), (8, 2485820), (10, 1988656), (16, 1242910), (20, 994328), (32, 621455), (40, 497164), (80, 248582), (160, 124291)]