21067568

素因数分解:

$2^4\times {\mathrm{307}}^1\times {\mathrm{4289}}^1$

素因数の和:4604

約数の個数: 20

約数和(自身を含む): 40960920

約数和(自身を除く): 19893352

約数列:

[1, 2, 4, 8, 16, 307, 614, 1228, 2456, 4289, 4912, 8578, 17156, 34312, 68624, 1316723, 2633446, 5266892, 10533784, 21067568]

約数ペア:

[(1, 21067568), (2, 10533784), (4, 5266892), (8, 2633446), (16, 1316723), (307, 68624), (614, 34312), (1228, 17156), (2456, 8578), (4289, 4912)]