40784080

素因数分解:

$2^4\times 5^1\times {\mathrm{509801}}^1$

素因数の和:509814

約数の個数: 20

約数和(自身を含む): 94823172

約数和(自身を除く): 54039092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509801, 1019602, 2039204, 2549005, 4078408, 5098010, 8156816, 10196020, 20392040, 40784080]

約数ペア:

[(1, 40784080), (2, 20392040), (4, 10196020), (5, 8156816), (8, 5098010), (10, 4078408), (16, 2549005), (20, 2039204), (40, 1019602), (80, 509801)]