21138026

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 41572608

約数和(自身を除く): 20434582

約数列:

[1, 2, 7, 13, 14, 26, 37, 43, 73, 74, 86, 91, 146, 182, 259, 301, 481, 511, 518, 559, 602, 949, 962, 1022, 1118, 1591, 1898, 2701, 3139, 3182, 3367, 3913, 5402, 6278, 6643, 6734, 7826, 11137, 13286, 18907, 20683, 21973, 22274, 35113, 37814, 40807, 41366, 43946, 70226, 81614, 116143, 144781, 232286, 245791, 285649, 289562, 491582, 571298, 813001, 1509859, 1626002, 3019718, 10569013, 21138026]

約数ペア:

[(1, 21138026), (2, 10569013), (7, 3019718), (13, 1626002), (14, 1509859), (26, 813001), (37, 571298), (43, 491582), (73, 289562), (74, 285649), (86, 245791), (91, 232286), (146, 144781), (182, 116143), (259, 81614), (301, 70226), (481, 43946), (511, 41366), (518, 40807), (559, 37814), (602, 35113), (949, 22274), (962, 21973), (1022, 20683), (1118, 18907), (1591, 13286), (1898, 11137), (2701, 7826), (3139, 6734), (3182, 6643), (3367, 6278), (3913, 5402)]