20439839

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{491}}^1$

素因数の和:830

約数の個数: 16

約数和(自身を含む): 24718080

約数和(自身を除く): 4278241

約数列:

[1, 7, 19, 133, 313, 491, 2191, 3437, 5947, 9329, 41629, 65303, 153683, 1075781, 2919977, 20439839]

約数ペア:

[(1, 20439839), (7, 2919977), (19, 1075781), (133, 153683), (313, 65303), (491, 41629), (2191, 9329), (3437, 5947)]