165740720

素因数分解:

$2^4\times 5^1\times {\mathrm{2071759}}^1$

素因数の和:2071772

約数の個数: 20

約数和(自身を含む): 385347360

約数和(自身を除く): 219606640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2071759, 4143518, 8287036, 10358795, 16574072, 20717590, 33148144, 41435180, 82870360, 165740720]

約数ペア:

[(1, 165740720), (2, 82870360), (4, 41435180), (5, 33148144), (8, 20717590), (10, 16574072), (16, 10358795), (20, 8287036), (40, 4143518), (80, 2071759)]