181708880

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{31991}}^1$

素因数の和:32075

約数の個数: 40

約数和(自身を含む): 428436864

約数和(自身を除く): 246727984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 31991, 63982, 127964, 159955, 255928, 319910, 511856, 639820, 1279640, 2271361, 2559280, 4542722, 9085444, 11356805, 18170888, 22713610, 36341776, 45427220, 90854440, 181708880]

約数ペア:

[(1, 181708880), (2, 90854440), (4, 45427220), (5, 36341776), (8, 22713610), (10, 18170888), (16, 11356805), (20, 9085444), (40, 4542722), (71, 2559280), (80, 2271361), (142, 1279640), (284, 639820), (355, 511856), (568, 319910), (710, 255928), (1136, 159955), (1420, 127964), (2840, 63982), (5680, 31991)]