19965295

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{4289}}^1$

素因数の和:4327

約数の個数: 24

約数和(自身を含む): 29343600

約数和(自身を除く): 9378305

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 665, 931, 4289, 4655, 21445, 30023, 81491, 150115, 210161, 407455, 570437, 1050805, 2852185, 3993059, 19965295]

約数ペア:

[(1, 19965295), (5, 3993059), (7, 2852185), (19, 1050805), (35, 570437), (49, 407455), (95, 210161), (133, 150115), (245, 81491), (665, 30023), (931, 21445), (4289, 4655)]