18950815

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{547}}^1$

素因数の和:619

約数の個数: 24

約数和(自身を含む): 25271568

約数和(自身を除く): 6320753

約数列:

[1, 5, 13, 41, 65, 169, 205, 533, 547, 845, 2665, 2735, 6929, 7111, 22427, 34645, 35555, 92443, 112135, 291551, 462215, 1457755, 3790163, 18950815]

約数ペア:

[(1, 18950815), (5, 3790163), (13, 1457755), (41, 462215), (65, 291551), (169, 112135), (205, 92443), (533, 35555), (547, 34645), (845, 22427), (2665, 7111), (2735, 6929)]