21460978

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 42964992

約数和(自身を除く): 21504014

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 73, 77, 83, 146, 154, 161, 166, 253, 322, 506, 511, 581, 803, 913, 1022, 1162, 1606, 1679, 1771, 1826, 1909, 3358, 3542, 3818, 5621, 6059, 6391, 11242, 11753, 12118, 12782, 13363, 18469, 20999, 23506, 26726, 36938, 41998, 42413, 66649, 84826, 129283, 133298, 139357, 146993, 258566, 278714, 293986, 466543, 933086, 975499, 1532927, 1950998, 3065854, 10730489, 21460978]

約数ペア:

[(1, 21460978), (2, 10730489), (7, 3065854), (11, 1950998), (14, 1532927), (22, 975499), (23, 933086), (46, 466543), (73, 293986), (77, 278714), (83, 258566), (146, 146993), (154, 139357), (161, 133298), (166, 129283), (253, 84826), (322, 66649), (506, 42413), (511, 41998), (581, 36938), (803, 26726), (913, 23506), (1022, 20999), (1162, 18469), (1606, 13363), (1679, 12782), (1771, 12118), (1826, 11753), (1909, 11242), (3358, 6391), (3542, 6059), (3818, 5621)]