28121325

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{5281}}^1$

素因数の和:5365

約数の個数: 24

約数和(自身を含む): 47157696

約数和(自身を除く): 19036371

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 5281, 5325, 15843, 26405, 79215, 132025, 374951, 396075, 1124853, 1874755, 5624265, 9373775, 28121325]

約数ペア:

[(1, 28121325), (3, 9373775), (5, 5624265), (15, 1874755), (25, 1124853), (71, 396075), (75, 374951), (213, 132025), (355, 79215), (1065, 26405), (1775, 15843), (5281, 5325)]