21824127

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{641}}^1$

素因数の和:760

約数の個数: 32

約数和(自身を含む): 35232960

約数和(自身を除く): 13408833

約数列:

[1, 3, 9, 13, 27, 39, 97, 117, 291, 351, 641, 873, 1261, 1923, 2619, 3783, 5769, 8333, 11349, 17307, 24999, 34047, 62177, 74997, 186531, 224991, 559593, 808301, 1678779, 2424903, 7274709, 21824127]

約数ペア:

[(1, 21824127), (3, 7274709), (9, 2424903), (13, 1678779), (27, 808301), (39, 559593), (97, 224991), (117, 186531), (291, 74997), (351, 62177), (641, 34047), (873, 24999), (1261, 17307), (1923, 11349), (2619, 8333), (3783, 5769)]