127780720

素因数分解:

$2^4\times 5^1\times {\mathrm{1597259}}^1$

素因数の和:1597272

約数の個数: 20

約数和(自身を含む): 297090360

約数和(自身を除く): 169309640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1597259, 3194518, 6389036, 7986295, 12778072, 15972590, 25556144, 31945180, 63890360, 127780720]

約数ペア:

[(1, 127780720), (2, 63890360), (4, 31945180), (5, 25556144), (8, 15972590), (10, 12778072), (16, 7986295), (20, 6389036), (40, 3194518), (80, 1597259)]