20673080

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2011}}^1$

素因数の和:2279

約数の個数: 32

約数和(自身を含む): 46718640

約数和(自身を除く): 26045560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2011, 2056, 2570, 4022, 5140, 8044, 10055, 10280, 16088, 20110, 40220, 80440, 516827, 1033654, 2067308, 2584135, 4134616, 5168270, 10336540, 20673080]

約数ペア:

[(1, 20673080), (2, 10336540), (4, 5168270), (5, 4134616), (8, 2584135), (10, 2067308), (20, 1033654), (40, 516827), (257, 80440), (514, 40220), (1028, 20110), (1285, 16088), (2011, 10280), (2056, 10055), (2570, 8044), (4022, 5140)]