19657547

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{641}}^1$

素因数の和:998

約数の個数: 16

約数和(自身を含む): 24303552

約数和(自身を除く): 4646005

約数列:

[1, 7, 13, 91, 337, 641, 2359, 4381, 4487, 8333, 30667, 58331, 216017, 1512119, 2808221, 19657547]

約数ペア:

[(1, 19657547), (7, 2808221), (13, 1512119), (91, 216017), (337, 58331), (641, 30667), (2359, 8333), (4381, 4487)]