21457086

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{109}}^2$

素因数の和:273

約数の個数: 48

約数和(自身を含む): 50649984

約数和(自身を除く): 29192898

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 86, 109, 129, 218, 258, 301, 327, 602, 654, 763, 903, 1526, 1806, 2289, 4578, 4687, 9374, 11881, 14061, 23762, 28122, 32809, 35643, 65618, 71286, 83167, 98427, 166334, 196854, 249501, 499002, 510883, 1021766, 1532649, 3065298, 3576181, 7152362, 10728543, 21457086]

約数ペア:

[(1, 21457086), (2, 10728543), (3, 7152362), (6, 3576181), (7, 3065298), (14, 1532649), (21, 1021766), (42, 510883), (43, 499002), (86, 249501), (109, 196854), (129, 166334), (218, 98427), (258, 83167), (301, 71286), (327, 65618), (602, 35643), (654, 32809), (763, 28122), (903, 23762), (1526, 14061), (1806, 11881), (2289, 9374), (4578, 4687)]