21360537

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:155

約数の個数: 64

約数和(自身を含む): 37324800

約数和(自身を除く): 15964263

約数列:

[1, 3, 9, 11, 23, 27, 33, 53, 59, 69, 99, 159, 177, 207, 253, 297, 477, 531, 583, 621, 649, 759, 1219, 1357, 1431, 1593, 1749, 1947, 2277, 3127, 3657, 4071, 5247, 5841, 6831, 9381, 10971, 12213, 13409, 14927, 15741, 17523, 28143, 32913, 34397, 36639, 40227, 44781, 71921, 84429, 103191, 120681, 134343, 215763, 309573, 362043, 403029, 647289, 791131, 928719, 1941867, 2373393, 7120179, 21360537]

約数ペア:

[(1, 21360537), (3, 7120179), (9, 2373393), (11, 1941867), (23, 928719), (27, 791131), (33, 647289), (53, 403029), (59, 362043), (69, 309573), (99, 215763), (159, 134343), (177, 120681), (207, 103191), (253, 84429), (297, 71921), (477, 44781), (531, 40227), (583, 36639), (621, 34397), (649, 32913), (759, 28143), (1219, 17523), (1357, 15741), (1431, 14927), (1593, 13409), (1749, 12213), (1947, 10971), (2277, 9381), (3127, 6831), (3657, 5841), (4071, 5247)]