82016720

素因数分解:

$2^4\times 5^1\times {\mathrm{1025209}}^1$

素因数の和:1025222

約数の個数: 20

約数和(自身を含む): 190689060

約数和(自身を除く): 108672340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1025209, 2050418, 4100836, 5126045, 8201672, 10252090, 16403344, 20504180, 41008360, 82016720]

約数ペア:

[(1, 82016720), (2, 41008360), (4, 20504180), (5, 16403344), (8, 10252090), (10, 8201672), (16, 5126045), (20, 4100836), (40, 2050418), (80, 1025209)]