1780720

素因数分解:

$2^4\times 5^1\times {\mathrm{22259}}^1$

素因数の和:22272

約数の個数: 20

約数和(自身を含む): 4140360

約数和(自身を除く): 2359640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 22259, 44518, 89036, 111295, 178072, 222590, 356144, 445180, 890360, 1780720]

約数ペア:

[(1, 1780720), (2, 890360), (4, 445180), (5, 356144), (8, 222590), (10, 178072), (16, 111295), (20, 89036), (40, 44518), (80, 22259)]