81092080

素因数分解:

$2^4\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2309}}^1$

素因数の和:2761

約数の個数: 40

約数和(自身を含む): 189050400

約数和(自身を除く): 107958320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 439, 878, 1756, 2195, 2309, 3512, 4390, 4618, 7024, 8780, 9236, 11545, 17560, 18472, 23090, 35120, 36944, 46180, 92360, 184720, 1013651, 2027302, 4054604, 5068255, 8109208, 10136510, 16218416, 20273020, 40546040, 81092080]

約数ペア:

[(1, 81092080), (2, 40546040), (4, 20273020), (5, 16218416), (8, 10136510), (10, 8109208), (16, 5068255), (20, 4054604), (40, 2027302), (80, 1013651), (439, 184720), (878, 92360), (1756, 46180), (2195, 36944), (2309, 35120), (3512, 23090), (4390, 18472), (4618, 17560), (7024, 11545), (8780, 9236)]