19877806

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{20663}}^1$

素因数の和:20715

約数の個数: 16

約数和(自身を含む): 32979744

約数和(自身を除く): 13101938

約数列:

[1, 2, 13, 26, 37, 74, 481, 962, 20663, 41326, 268619, 537238, 764531, 1529062, 9938903, 19877806]

約数ペア:

[(1, 19877806), (2, 9938903), (13, 1529062), (26, 764531), (37, 537238), (74, 268619), (481, 41326), (962, 20663)]