21309028

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13219}}^1$

素因数の和:13267

約数の個数: 24

約数和(自身を含む): 41457920

約数和(自身を除く): 20148892

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 13219, 26438, 52876, 171847, 343694, 409789, 687388, 819578, 1639156, 5327257, 10654514, 21309028]

約数ペア:

[(1, 21309028), (2, 10654514), (4, 5327257), (13, 1639156), (26, 819578), (31, 687388), (52, 409789), (62, 343694), (124, 171847), (403, 52876), (806, 26438), (1612, 13219)]