81332480

素因数分解:

$2^8\times 5^1\times {\mathrm{63541}}^1$

素因数の和:63562

約数の個数: 36

約数和(自身を含む): 194819772

約数和(自身を除く): 113487292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 63541, 127082, 254164, 317705, 508328, 635410, 1016656, 1270820, 2033312, 2541640, 4066624, 5083280, 8133248, 10166560, 16266496, 20333120, 40666240, 81332480]

約数ペア:

[(1, 81332480), (2, 40666240), (4, 20333120), (5, 16266496), (8, 10166560), (10, 8133248), (16, 5083280), (20, 4066624), (32, 2541640), (40, 2033312), (64, 1270820), (80, 1016656), (128, 635410), (160, 508328), (256, 317705), (320, 254164), (640, 127082), (1280, 63541)]