28261155

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{3917}}^1$

素因数の和:3975

約数の個数: 32

約数和(自身を含む): 50025024

約数和(自身を除く): 21763869

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 3917, 7215, 11751, 19585, 50921, 58755, 144929, 152763, 254605, 434787, 724645, 763815, 1884077, 2173935, 5652231, 9420385, 28261155]

約数ペア:

[(1, 28261155), (3, 9420385), (5, 5652231), (13, 2173935), (15, 1884077), (37, 763815), (39, 724645), (65, 434787), (111, 254605), (185, 152763), (195, 144929), (481, 58755), (555, 50921), (1443, 19585), (2405, 11751), (3917, 7215)]