280808560

素因数分解:

$2^4\times 5^1\times {\mathrm{3510107}}^1$

素因数の和:3510120

約数の個数: 20

約数和(自身を含む): 652880088

約数和(自身を除く): 372071528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3510107, 7020214, 14040428, 17550535, 28080856, 35101070, 56161712, 70202140, 140404280, 280808560]

約数ペア:

[(1, 280808560), (2, 140404280), (4, 70202140), (5, 56161712), (8, 35101070), (10, 28080856), (16, 17550535), (20, 14040428), (40, 7020214), (80, 3510107)]