20025621

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:143

約数の個数: 72

約数和(自身を含む): 37844352

約数和(自身を除く): 17818731

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 63, 71, 77, 99, 111, 121, 213, 231, 259, 333, 363, 407, 497, 639, 693, 777, 781, 847, 1089, 1221, 1491, 2331, 2343, 2541, 2627, 2849, 3663, 4473, 4477, 5467, 7029, 7623, 7881, 8547, 8591, 13431, 16401, 18389, 23643, 25641, 25773, 28897, 31339, 40293, 49203, 55167, 60137, 77319, 86691, 94017, 165501, 180411, 202279, 260073, 282051, 317867, 541233, 606837, 953601, 1820511, 2225069, 2860803, 6675207, 20025621]

約数ペア:

[(1, 20025621), (3, 6675207), (7, 2860803), (9, 2225069), (11, 1820511), (21, 953601), (33, 606837), (37, 541233), (63, 317867), (71, 282051), (77, 260073), (99, 202279), (111, 180411), (121, 165501), (213, 94017), (231, 86691), (259, 77319), (333, 60137), (363, 55167), (407, 49203), (497, 40293), (639, 31339), (693, 28897), (777, 25773), (781, 25641), (847, 23643), (1089, 18389), (1221, 16401), (1491, 13431), (2331, 8591), (2343, 8547), (2541, 7881), (2627, 7623), (2849, 7029), (3663, 5467), (4473, 4477)]