1980237

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{709}}^1$

素因数の和:745

約数の個数: 24

約数和(自身を含む): 3237600

約数和(自身を除く): 1257363

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 709, 931, 2127, 2793, 4963, 13471, 14889, 34741, 40413, 94297, 104223, 282891, 660079, 1980237]

約数ペア:

[(1, 1980237), (3, 660079), (7, 282891), (19, 104223), (21, 94297), (49, 40413), (57, 34741), (133, 14889), (147, 13471), (399, 4963), (709, 2793), (931, 2127)]