19992161

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{787}}^1$

素因数の和:1004

約数の個数: 16

約数和(自身を含む): 24207360

約数和(自身を除く): 4215199

約数列:

[1, 7, 19, 133, 191, 787, 1337, 3629, 5509, 14953, 25403, 104671, 150317, 1052219, 2856023, 19992161]

約数ペア:

[(1, 19992161), (7, 2856023), (19, 1052219), (133, 150317), (191, 104671), (787, 25403), (1337, 14953), (3629, 5509)]