28211325

素因数分解:

$3^1\times 5^2\times {\mathrm{509}}^1\times {\mathrm{739}}^1$

素因数の和:1261

約数の個数: 24

約数和(自身を含む): 46797600

約数和(自身を除く): 18586275

約数列:

[1, 3, 5, 15, 25, 75, 509, 739, 1527, 2217, 2545, 3695, 7635, 11085, 12725, 18475, 38175, 55425, 376151, 1128453, 1880755, 5642265, 9403775, 28211325]

約数ペア:

[(1, 28211325), (3, 9403775), (5, 5642265), (15, 1880755), (25, 1128453), (75, 376151), (509, 55425), (739, 38175), (1527, 18475), (2217, 12725), (2545, 11085), (3695, 7635)]