21019014

素因数分解:

$2^1\times 3^5\times {\mathrm{61}}^1\times {\mathrm{709}}^1$

素因数の和:787

約数の個数: 48

約数和(自身を含む): 48069840

約数和(自身を除く): 27050826

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 61, 81, 122, 162, 183, 243, 366, 486, 549, 709, 1098, 1418, 1647, 2127, 3294, 4254, 4941, 6381, 9882, 12762, 14823, 19143, 29646, 38286, 43249, 57429, 86498, 114858, 129747, 172287, 259494, 344574, 389241, 778482, 1167723, 2335446, 3503169, 7006338, 10509507, 21019014]

約数ペア:

[(1, 21019014), (2, 10509507), (3, 7006338), (6, 3503169), (9, 2335446), (18, 1167723), (27, 778482), (54, 389241), (61, 344574), (81, 259494), (122, 172287), (162, 129747), (183, 114858), (243, 86498), (366, 57429), (486, 43249), (549, 38286), (709, 29646), (1098, 19143), (1418, 14823), (1647, 12762), (2127, 9882), (3294, 6381), (4254, 4941)]