90020720

素因数分解:

$2^4\times 5^1\times {\mathrm{1125259}}^1$

素因数の和:1125272

約数の個数: 20

約数和(自身を含む): 209298360

約数和(自身を除く): 119277640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1125259, 2250518, 4501036, 5626295, 9002072, 11252590, 18004144, 22505180, 45010360, 90020720]

約数ペア:

[(1, 90020720), (2, 45010360), (4, 22505180), (5, 18004144), (8, 11252590), (10, 9002072), (16, 5626295), (20, 4501036), (40, 2250518), (80, 1125259)]