19778837

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2887}}^1$

素因数の和:2948

約数の個数: 16

約数和(自身を含む): 23288832

約数和(自身を除く): 3509995

約数列:

[1, 13, 17, 31, 221, 403, 527, 2887, 6851, 37531, 49079, 89497, 638027, 1163461, 1521449, 19778837]

約数ペア:

[(1, 19778837), (13, 1521449), (17, 1163461), (31, 638027), (221, 89497), (403, 49079), (527, 37531), (2887, 6851)]