20191725

素因数分解:

$3^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2087}}^1$

素因数の和:2146

約数の個数: 36

約数和(自身を含む): 37024416

約数和(自身を除く): 16832691

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 129, 215, 225, 387, 645, 1075, 1935, 2087, 3225, 6261, 9675, 10435, 18783, 31305, 52175, 89741, 93915, 156525, 269223, 448705, 469575, 807669, 1346115, 2243525, 4038345, 6730575, 20191725]

約数ペア:

[(1, 20191725), (3, 6730575), (5, 4038345), (9, 2243525), (15, 1346115), (25, 807669), (43, 469575), (45, 448705), (75, 269223), (129, 156525), (215, 93915), (225, 89741), (387, 52175), (645, 31305), (1075, 18783), (1935, 10435), (2087, 9675), (3225, 6261)]