19887520

素因数分解:

$2^5\times 5^1\times {\mathrm{124297}}^1$

素因数の和:124312

約数の個数: 24

約数和(自身を含む): 46984644

約数和(自身を除く): 27097124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 124297, 248594, 497188, 621485, 994376, 1242970, 1988752, 2485940, 3977504, 4971880, 9943760, 19887520]

約数ペア:

[(1, 19887520), (2, 9943760), (4, 4971880), (5, 3977504), (8, 2485940), (10, 1988752), (16, 1242970), (20, 994376), (32, 621485), (40, 497188), (80, 248594), (160, 124297)]