21142198

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 42467328

約数和(自身を除く): 21325130

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 47, 77, 94, 127, 154, 161, 253, 254, 322, 329, 506, 517, 658, 889, 1034, 1081, 1397, 1771, 1778, 2162, 2794, 2921, 3542, 3619, 5842, 5969, 7238, 7567, 9779, 11891, 11938, 15134, 19558, 20447, 23782, 32131, 40894, 41783, 64262, 65659, 83237, 83566, 131318, 137287, 166474, 224917, 274574, 449834, 459613, 919226, 961009, 1510157, 1922018, 3020314, 10571099, 21142198]

約数ペア:

[(1, 21142198), (2, 10571099), (7, 3020314), (11, 1922018), (14, 1510157), (22, 961009), (23, 919226), (46, 459613), (47, 449834), (77, 274574), (94, 224917), (127, 166474), (154, 137287), (161, 131318), (253, 83566), (254, 83237), (322, 65659), (329, 64262), (506, 41783), (517, 40894), (658, 32131), (889, 23782), (1034, 20447), (1081, 19558), (1397, 15134), (1771, 11938), (1778, 11891), (2162, 9779), (2794, 7567), (2921, 7238), (3542, 5969), (3619, 5842)]