21389782

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{13729}}^1$

素因数の和:13791

約数の個数: 16

約数和(自身を含む): 34599600

約数和(自身を除く): 13209818

約数列:

[1, 2, 19, 38, 41, 82, 779, 1558, 13729, 27458, 260851, 521702, 562889, 1125778, 10694891, 21389782]

約数ペア:

[(1, 21389782), (2, 10694891), (19, 1125778), (38, 562889), (41, 521702), (82, 260851), (779, 27458), (1558, 13729)]