19881239

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{1801}}^1$

素因数の和:1910

約数の個数: 16

約数和(自身を含む): 24218880

約数和(自身を除く): 4337641

約数列:

[1, 7, 19, 83, 133, 581, 1577, 1801, 11039, 12607, 34219, 149483, 239533, 1046381, 2840177, 19881239]

約数ペア:

[(1, 19881239), (7, 2840177), (19, 1046381), (83, 239533), (133, 149483), (581, 34219), (1577, 12607), (1801, 11039)]