18981969

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{14479}}^1$

素因数の和:14524

約数の個数: 16

約数和(自身を含む): 27801600

約数和(自身を除く): 8819631

約数列:

[1, 3, 19, 23, 57, 69, 437, 1311, 14479, 43437, 275101, 333017, 825303, 999051, 6327323, 18981969]

約数ペア:

[(1, 18981969), (3, 6327323), (19, 999051), (23, 825303), (57, 333017), (69, 275101), (437, 43437), (1311, 14479)]