19360720

素因数分解:

$2^4\times 5^1\times {\mathrm{242009}}^1$

素因数の和:242022

約数の個数: 20

約数和(自身を含む): 45013860

約数和(自身を除く): 25653140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 242009, 484018, 968036, 1210045, 1936072, 2420090, 3872144, 4840180, 9680360, 19360720]

約数ペア:

[(1, 19360720), (2, 9680360), (4, 4840180), (5, 3872144), (8, 2420090), (10, 1936072), (16, 1210045), (20, 968036), (40, 484018), (80, 242009)]