28790325

素因数分解:

$3^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{643}}^1$

素因数の和:858

約数の個数: 36

約数和(自身を含む): 51906400

約数和(自身を除く): 23116075

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 199, 225, 597, 643, 995, 1791, 1929, 2985, 3215, 4975, 5787, 8955, 9645, 14925, 16075, 28935, 44775, 48225, 127957, 144675, 383871, 639785, 1151613, 1919355, 3198925, 5758065, 9596775, 28790325]

約数ペア:

[(1, 28790325), (3, 9596775), (5, 5758065), (9, 3198925), (15, 1919355), (25, 1151613), (45, 639785), (75, 383871), (199, 144675), (225, 127957), (597, 48225), (643, 44775), (995, 28935), (1791, 16075), (1929, 14925), (2985, 9645), (3215, 8955), (4975, 5787)]