21799388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{6257}}^1$

素因数の和:6341

約数の個数: 24

約数和(自身を含む): 41703312

約数和(自身を除く): 19903924

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 268, 871, 1742, 3484, 6257, 12514, 25028, 81341, 162682, 325364, 419219, 838438, 1676876, 5449847, 10899694, 21799388]

約数ペア:

[(1, 21799388), (2, 10899694), (4, 5449847), (13, 1676876), (26, 838438), (52, 419219), (67, 325364), (134, 162682), (268, 81341), (871, 25028), (1742, 12514), (3484, 6257)]