28255720

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{7937}}^1$

素因数の和:8037

約数の個数: 32

約数和(自身を含む): 64297800

約数和(自身を除く): 36042080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 7937, 15874, 31748, 39685, 63496, 79370, 158740, 317480, 706393, 1412786, 2825572, 3531965, 5651144, 7063930, 14127860, 28255720]

約数ペア:

[(1, 28255720), (2, 14127860), (4, 7063930), (5, 5651144), (8, 3531965), (10, 2825572), (20, 1412786), (40, 706393), (89, 317480), (178, 158740), (356, 79370), (445, 63496), (712, 39685), (890, 31748), (1780, 15874), (3560, 7937)]