28081125

素因数分解:

$3^2\times 5^3\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:359

約数の個数: 48

約数和(自身を含む): 51308400

約数和(自身を除く): 23227275

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 109, 125, 225, 229, 327, 375, 545, 687, 981, 1125, 1145, 1635, 2061, 2725, 3435, 4905, 5725, 8175, 10305, 13625, 17175, 24525, 24961, 28625, 40875, 51525, 74883, 85875, 122625, 124805, 224649, 257625, 374415, 624025, 1123245, 1872075, 3120125, 5616225, 9360375, 28081125]

約数ペア:

[(1, 28081125), (3, 9360375), (5, 5616225), (9, 3120125), (15, 1872075), (25, 1123245), (45, 624025), (75, 374415), (109, 257625), (125, 224649), (225, 124805), (229, 122625), (327, 85875), (375, 74883), (545, 51525), (687, 40875), (981, 28625), (1125, 24961), (1145, 24525), (1635, 17175), (2061, 13625), (2725, 10305), (3435, 8175), (4905, 5725)]