169600720

素因数分解:

$2^4\times 5^1\times {\mathrm{2120009}}^1$

素因数の和:2120022

約数の個数: 20

約数和(自身を含む): 394321860

約数和(自身を除く): 224721140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2120009, 4240018, 8480036, 10600045, 16960072, 21200090, 33920144, 42400180, 84800360, 169600720]

約数ペア:

[(1, 169600720), (2, 84800360), (4, 42400180), (5, 33920144), (8, 21200090), (10, 16960072), (16, 10600045), (20, 8480036), (40, 4240018), (80, 2120009)]