21812480

素因数分解:

$2^8\times 5^1\times {\mathrm{17041}}^1$

素因数の和:17062

約数の個数: 36

約数和(自身を含む): 52250772

約数和(自身を除く): 30438292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 17041, 34082, 68164, 85205, 136328, 170410, 272656, 340820, 545312, 681640, 1090624, 1363280, 2181248, 2726560, 4362496, 5453120, 10906240, 21812480]

約数ペア:

[(1, 21812480), (2, 10906240), (4, 5453120), (5, 4362496), (8, 2726560), (10, 2181248), (16, 1363280), (20, 1090624), (32, 681640), (40, 545312), (64, 340820), (80, 272656), (128, 170410), (160, 136328), (256, 85205), (320, 68164), (640, 34082), (1280, 17041)]