8781980

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{769}}^1$

素因数の和:1349

約数の個数: 24

約数和(自身を含む): 18498480

約数和(自身を除く): 9716500

約数列:

[1, 2, 4, 5, 10, 20, 571, 769, 1142, 1538, 2284, 2855, 3076, 3845, 5710, 7690, 11420, 15380, 439099, 878198, 1756396, 2195495, 4390990, 8781980]

約数ペア:

[(1, 8781980), (2, 4390990), (4, 2195495), (5, 1756396), (10, 878198), (20, 439099), (571, 15380), (769, 11420), (1142, 7690), (1538, 5710), (2284, 3845), (2855, 3076)]