21138004

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{2269}}^1$

素因数の和:2427

約数の個数: 24

約数和(自身を含む): 39470760

約数和(自身を除く): 18332756

約数列:

[1, 2, 4, 17, 34, 68, 137, 274, 548, 2269, 2329, 4538, 4658, 9076, 9316, 38573, 77146, 154292, 310853, 621706, 1243412, 5284501, 10569002, 21138004]

約数ペア:

[(1, 21138004), (2, 10569002), (4, 5284501), (17, 1243412), (34, 621706), (68, 310853), (137, 154292), (274, 77146), (548, 38573), (2269, 9316), (2329, 9076), (4538, 4658)]