21980756

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^2\times {\mathrm{467}}^1$

素因数の和:560

約数の個数: 36

約数和(自身を含む): 45156384

約数和(自身を除く): 23175628

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 467, 574, 934, 1148, 1681, 1868, 3269, 3362, 6538, 6724, 11767, 13076, 19147, 23534, 38294, 47068, 76588, 134029, 268058, 536116, 785027, 1570054, 3140108, 5495189, 10990378, 21980756]

約数ペア:

[(1, 21980756), (2, 10990378), (4, 5495189), (7, 3140108), (14, 1570054), (28, 785027), (41, 536116), (82, 268058), (164, 134029), (287, 76588), (467, 47068), (574, 38294), (934, 23534), (1148, 19147), (1681, 13076), (1868, 11767), (3269, 6724), (3362, 6538)]