21174435

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 39424320

約数和(自身を除く): 18249885

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 89, 153, 255, 267, 311, 445, 765, 801, 933, 1335, 1513, 1555, 2799, 4005, 4539, 4665, 5287, 7565, 13617, 13995, 15861, 22695, 26435, 27679, 47583, 68085, 79305, 83037, 138395, 237915, 249111, 415185, 470543, 1245555, 1411629, 2352715, 4234887, 7058145, 21174435]

約数ペア:

[(1, 21174435), (3, 7058145), (5, 4234887), (9, 2352715), (15, 1411629), (17, 1245555), (45, 470543), (51, 415185), (85, 249111), (89, 237915), (153, 138395), (255, 83037), (267, 79305), (311, 68085), (445, 47583), (765, 27679), (801, 26435), (933, 22695), (1335, 15861), (1513, 13995), (1555, 13617), (2799, 7565), (4005, 5287), (4539, 4665)]