28721925

素因数分解:

$3^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{2503}}^1$

素因数の和:2539

約数の個数: 48

約数和(自身を含む): 55889280

約数和(自身を除く): 27167355

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 85, 135, 153, 225, 255, 425, 459, 675, 765, 1275, 2295, 2503, 3825, 7509, 11475, 12515, 22527, 37545, 42551, 62575, 67581, 112635, 127653, 187725, 212755, 337905, 382959, 563175, 638265, 1063775, 1148877, 1689525, 1914795, 3191325, 5744385, 9573975, 28721925]

約数ペア:

[(1, 28721925), (3, 9573975), (5, 5744385), (9, 3191325), (15, 1914795), (17, 1689525), (25, 1148877), (27, 1063775), (45, 638265), (51, 563175), (75, 382959), (85, 337905), (135, 212755), (153, 187725), (225, 127653), (255, 112635), (425, 67581), (459, 62575), (675, 42551), (765, 37545), (1275, 22527), (2295, 12515), (2503, 11475), (3825, 7509)]