21047778

素因数分解:

$2^1\times 3^2\times {\mathrm{59}}^1\times {\mathrm{19819}}^1$

素因数の和:19886

約数の個数: 24

約数和(自身を含む): 46378800

約数和(自身を除く): 25331022

約数列:

[1, 2, 3, 6, 9, 18, 59, 118, 177, 354, 531, 1062, 19819, 39638, 59457, 118914, 178371, 356742, 1169321, 2338642, 3507963, 7015926, 10523889, 21047778]

約数ペア:

[(1, 21047778), (2, 10523889), (3, 7015926), (6, 3507963), (9, 2338642), (18, 1169321), (59, 356742), (118, 178371), (177, 118914), (354, 59457), (531, 39638), (1062, 19819)]