28591325

素因数分解:

$5^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{821}}^1$

素因数の和:1037

約数の個数: 24

約数和(自身を含む): 40771200

約数和(自身を除く): 12179875

約数列:

[1, 5, 7, 25, 35, 175, 199, 821, 995, 1393, 4105, 4975, 5747, 6965, 20525, 28735, 34825, 143675, 163379, 816895, 1143653, 4084475, 5718265, 28591325]

約数ペア:

[(1, 28591325), (5, 5718265), (7, 4084475), (25, 1143653), (35, 816895), (175, 163379), (199, 143675), (821, 34825), (995, 28735), (1393, 20525), (4105, 6965), (4975, 5747)]