21277806

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 49268736

約数和(自身を除く): 27990930

約数列:

[1, 2, 3, 6, 11, 22, 23, 33, 46, 66, 69, 107, 131, 138, 214, 253, 262, 321, 393, 506, 642, 759, 786, 1177, 1441, 1518, 2354, 2461, 2882, 3013, 3531, 4323, 4922, 6026, 7062, 7383, 8646, 9039, 14017, 14766, 18078, 27071, 28034, 33143, 42051, 54142, 66286, 81213, 84102, 99429, 154187, 162426, 198858, 308374, 322391, 462561, 644782, 925122, 967173, 1934346, 3546301, 7092602, 10638903, 21277806]

約数ペア:

[(1, 21277806), (2, 10638903), (3, 7092602), (6, 3546301), (11, 1934346), (22, 967173), (23, 925122), (33, 644782), (46, 462561), (66, 322391), (69, 308374), (107, 198858), (131, 162426), (138, 154187), (214, 99429), (253, 84102), (262, 81213), (321, 66286), (393, 54142), (506, 42051), (642, 33143), (759, 28034), (786, 27071), (1177, 18078), (1441, 14766), (1518, 14017), (2354, 9039), (2461, 8646), (2882, 7383), (3013, 7062), (3531, 6026), (4323, 4922)]