20880075

素因数分解:

$3^1\times 5^2\times {\mathrm{199}}^1\times {\mathrm{1399}}^1$

素因数の和:1611

約数の個数: 24

約数和(自身を含む): 34720000

約数和(自身を除く): 13839925

約数列:

[1, 3, 5, 15, 25, 75, 199, 597, 995, 1399, 2985, 4197, 4975, 6995, 14925, 20985, 34975, 104925, 278401, 835203, 1392005, 4176015, 6960025, 20880075]

約数ペア:

[(1, 20880075), (3, 6960025), (5, 4176015), (15, 1392005), (25, 835203), (75, 278401), (199, 104925), (597, 34975), (995, 20985), (1399, 14925), (2985, 6995), (4197, 4975)]