25554249

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 44478720

約数和(自身を除く): 18924471

約数列:

[1, 3, 7, 9, 21, 29, 63, 71, 87, 197, 203, 213, 261, 497, 591, 609, 639, 1379, 1491, 1773, 1827, 2059, 4137, 4473, 5713, 6177, 12411, 13987, 14413, 17139, 18531, 39991, 41961, 43239, 51417, 97909, 119973, 125883, 129717, 293727, 359919, 405623, 881181, 1216869, 2839361, 3650607, 8518083, 25554249]

約数ペア:

[(1, 25554249), (3, 8518083), (7, 3650607), (9, 2839361), (21, 1216869), (29, 881181), (63, 405623), (71, 359919), (87, 293727), (197, 129717), (203, 125883), (213, 119973), (261, 97909), (497, 51417), (591, 43239), (609, 41961), (639, 39991), (1379, 18531), (1491, 17139), (1773, 14413), (1827, 13987), (2059, 12411), (4137, 6177), (4473, 5713)]