28220475

素因数分解:

$3^1\times 5^2\times {\mathrm{139}}^1\times {\mathrm{2707}}^1$

素因数の和:2859

約数の個数: 24

約数和(自身を含む): 47010880

約数和(自身を除く): 18790405

約数列:

[1, 3, 5, 15, 25, 75, 139, 417, 695, 2085, 2707, 3475, 8121, 10425, 13535, 40605, 67675, 203025, 376273, 1128819, 1881365, 5644095, 9406825, 28220475]

約数ペア:

[(1, 28220475), (3, 9406825), (5, 5644095), (15, 1881365), (25, 1128819), (75, 376273), (139, 203025), (417, 67675), (695, 40605), (2085, 13535), (2707, 10425), (3475, 8121)]