21513849

素因数分解:

$3^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{12343}}^1$

素因数の和:12436

約数の個数: 16

約数和(自身を含む): 33180672

約数和(自身を除く): 11666823

約数列:

[1, 3, 7, 21, 83, 249, 581, 1743, 12343, 37029, 86401, 259203, 1024469, 3073407, 7171283, 21513849]

約数ペア:

[(1, 21513849), (3, 7171283), (7, 3073407), (21, 1024469), (83, 259203), (249, 86401), (581, 37029), (1743, 12343)]