21003006

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{641}}^1$

素因数の和:816

約数の個数: 32

約数和(自身を含む): 43388928

約数和(自身を除く): 22385922

約数列:

[1, 2, 3, 6, 43, 86, 127, 129, 254, 258, 381, 641, 762, 1282, 1923, 3846, 5461, 10922, 16383, 27563, 32766, 55126, 81407, 82689, 162814, 165378, 244221, 488442, 3500501, 7001002, 10501503, 21003006]

約数ペア:

[(1, 21003006), (2, 10501503), (3, 7001002), (6, 3500501), (43, 488442), (86, 244221), (127, 165378), (129, 162814), (254, 82689), (258, 81407), (381, 55126), (641, 32766), (762, 27563), (1282, 16383), (1923, 10922), (3846, 5461)]