21293679

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13729}}^1$

素因数の和:13790

約数の個数: 16

約数和(自身を含む): 31633920

約数和(自身を除く): 10340241

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13729, 41187, 151019, 453057, 645263, 1935789, 7097893, 21293679]

約数ペア:

[(1, 21293679), (3, 7097893), (11, 1935789), (33, 645263), (47, 453057), (141, 151019), (517, 41187), (1551, 13729)]