104080

素因数分解:

$2^4\times 5^1\times {\mathrm{1301}}^1$

素因数の和:1314

約数の個数: 20

約数和(自身を含む): 242172

約数和(自身を除く): 138092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1301, 2602, 5204, 6505, 10408, 13010, 20816, 26020, 52040, 104080]

約数ペア:

[(1, 104080), (2, 52040), (4, 26020), (5, 20816), (8, 13010), (10, 10408), (16, 6505), (20, 5204), (40, 2602), (80, 1301)]