21001256

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{503}}^1$

素因数の和:833

約数の個数: 32

約数和(自身を含む): 41912640

約数和(自身を除く): 20911384

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 307, 503, 614, 1006, 1228, 2012, 2456, 4024, 5219, 8551, 10438, 17102, 20876, 34204, 41752, 68408, 154421, 308842, 617684, 1235368, 2625157, 5250314, 10500628, 21001256]

約数ペア:

[(1, 21001256), (2, 10500628), (4, 5250314), (8, 2625157), (17, 1235368), (34, 617684), (68, 308842), (136, 154421), (307, 68408), (503, 41752), (614, 34204), (1006, 20876), (1228, 17102), (2012, 10438), (2456, 8551), (4024, 5219)]