21095613

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:239

約数の個数: 64

約数和(自身を含む): 39782400

約数和(自身を除く): 18686787

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 73, 77, 99, 139, 189, 219, 231, 297, 417, 511, 657, 693, 803, 973, 1251, 1529, 1533, 1971, 2079, 2409, 2919, 3753, 4587, 4599, 5621, 7227, 8757, 10147, 10703, 13761, 13797, 16863, 21681, 26271, 30441, 32109, 41283, 50589, 71029, 91323, 96327, 111617, 151767, 213087, 273969, 288981, 334851, 639261, 781319, 1004553, 1917783, 2343957, 3013659, 7031871, 21095613]

約数ペア:

[(1, 21095613), (3, 7031871), (7, 3013659), (9, 2343957), (11, 1917783), (21, 1004553), (27, 781319), (33, 639261), (63, 334851), (73, 288981), (77, 273969), (99, 213087), (139, 151767), (189, 111617), (219, 96327), (231, 91323), (297, 71029), (417, 50589), (511, 41283), (657, 32109), (693, 30441), (803, 26271), (973, 21681), (1251, 16863), (1529, 13797), (1533, 13761), (1971, 10703), (2079, 10147), (2409, 8757), (2919, 7227), (3753, 5621), (4587, 4599)]