21543675

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 38470752

約数和(自身を除く): 16927077

約数列:

[1, 3, 5, 15, 17, 25, 51, 61, 75, 85, 183, 255, 277, 305, 425, 831, 915, 1037, 1275, 1385, 1525, 3111, 4155, 4575, 4709, 5185, 6925, 14127, 15555, 16897, 20775, 23545, 25925, 50691, 70635, 77775, 84485, 117725, 253455, 287249, 353175, 422425, 861747, 1267275, 1436245, 4308735, 7181225, 21543675]

約数ペア:

[(1, 21543675), (3, 7181225), (5, 4308735), (15, 1436245), (17, 1267275), (25, 861747), (51, 422425), (61, 353175), (75, 287249), (85, 253455), (183, 117725), (255, 84485), (277, 77775), (305, 70635), (425, 50691), (831, 25925), (915, 23545), (1037, 20775), (1275, 16897), (1385, 15555), (1525, 14127), (3111, 6925), (4155, 5185), (4575, 4709)]