21187278

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2437}}^1$

素因数の和:2478

約数の個数: 64

約数和(自身を含む): 56171520

約数和(自身を除く): 34984242

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 23, 27, 42, 46, 54, 63, 69, 126, 138, 161, 189, 207, 322, 378, 414, 483, 621, 966, 1242, 1449, 2437, 2898, 4347, 4874, 7311, 8694, 14622, 17059, 21933, 34118, 43866, 51177, 56051, 65799, 102354, 112102, 131598, 153531, 168153, 307062, 336306, 392357, 460593, 504459, 784714, 921186, 1008918, 1177071, 1513377, 2354142, 3026754, 3531213, 7062426, 10593639, 21187278]

約数ペア:

[(1, 21187278), (2, 10593639), (3, 7062426), (6, 3531213), (7, 3026754), (9, 2354142), (14, 1513377), (18, 1177071), (21, 1008918), (23, 921186), (27, 784714), (42, 504459), (46, 460593), (54, 392357), (63, 336306), (69, 307062), (126, 168153), (138, 153531), (161, 131598), (189, 112102), (207, 102354), (322, 65799), (378, 56051), (414, 51177), (483, 43866), (621, 34118), (966, 21933), (1242, 17059), (1449, 14622), (2437, 8694), (2898, 7311), (4347, 4874)]