19897591

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{307}}^1$

素因数の和:558

約数の個数: 16

約数和(自身を含む): 23417856

約数和(自身を除く): 3520265

約数列:

[1, 7, 47, 197, 307, 329, 1379, 2149, 9259, 14429, 60479, 64813, 101003, 423353, 2842513, 19897591]

約数ペア:

[(1, 19897591), (7, 2842513), (47, 423353), (197, 101003), (307, 64813), (329, 60479), (1379, 14429), (2149, 9259)]