20448320

素因数分解:

$2^6\times 5^1\times {\mathrm{63901}}^1$

素因数の和:63918

約数の個数: 28

約数和(自身を含む): 48693324

約数和(自身を除く): 28245004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 63901, 127802, 255604, 319505, 511208, 639010, 1022416, 1278020, 2044832, 2556040, 4089664, 5112080, 10224160, 20448320]

約数ペア:

[(1, 20448320), (2, 10224160), (4, 5112080), (5, 4089664), (8, 2556040), (10, 2044832), (16, 1278020), (20, 1022416), (32, 639010), (40, 511208), (64, 319505), (80, 255604), (160, 127802), (320, 63901)]