21380458851

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{1291}}^1\times {\mathrm{59359}}^1$

素因数の和:60687

約数の個数: 24

約数和(自身を含む): 31904337920

約数和(自身を除く): 10523879069

約数列:

[1, 3, 9, 31, 93, 279, 1291, 3873, 11619, 40021, 59359, 120063, 178077, 360189, 534231, 1840129, 5520387, 16561161, 76632469, 229897407, 689692221, 2375606539, 7126819617, 21380458851]

約数ペア:

[(1, 21380458851), (3, 7126819617), (9, 2375606539), (31, 689692221), (93, 229897407), (279, 76632469), (1291, 16561161), (3873, 5520387), (11619, 1840129), (40021, 534231), (59359, 360189), (120063, 178077)]