19388005

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{42611}}^1$

素因数の和:42636

約数の個数: 16

約数和(自身を含む): 28635264

約数和(自身を除く): 9247259

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 42611, 213055, 298277, 553943, 1491385, 2769715, 3877601, 19388005]

約数ペア:

[(1, 19388005), (5, 3877601), (7, 2769715), (13, 1491385), (35, 553943), (65, 298277), (91, 213055), (455, 42611)]