19958965

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{4583}}^1$

素因数の和:4668

約数の個数: 16

約数和(自身を含む): 26183808

約数和(自身を除く): 6224843

約数列:

[1, 5, 13, 65, 67, 335, 871, 4355, 4583, 22915, 59579, 297895, 307061, 1535305, 3991793, 19958965]

約数ペア:

[(1, 19958965), (5, 3991793), (13, 1535305), (65, 307061), (67, 297895), (335, 59579), (871, 22915), (4355, 4583)]