20009984

素因数分解:

$2^{10}\times {\mathrm{19541}}^1$

素因数の和:19561

約数の個数: 22

約数和(自身を含む): 40002474

約数和(自身を除く): 19992490

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 19541, 39082, 78164, 156328, 312656, 625312, 1250624, 2501248, 5002496, 10004992, 20009984]

約数ペア:

[(1, 20009984), (2, 10004992), (4, 5002496), (8, 2501248), (16, 1250624), (32, 625312), (64, 312656), (128, 156328), (256, 78164), (512, 39082), (1024, 19541)]