19097957680

素因数分解:

$2^4\times 5^1\times {\mathrm{238724471}}^1$

素因数の和:238724484

約数の個数: 20

約数和(自身を含む): 44402751792

約数和(自身を除く): 25304794112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 238724471, 477448942, 954897884, 1193622355, 1909795768, 2387244710, 3819591536, 4774489420, 9548978840, 19097957680]

約数ペア:

[(1, 19097957680), (2, 9548978840), (4, 4774489420), (5, 3819591536), (8, 2387244710), (10, 1909795768), (16, 1193622355), (20, 954897884), (40, 477448942), (80, 238724471)]