21162170

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72973}}^1$

素因数の和:73009

約数の個数: 16

約数和(自身を含む): 39405960

約数和(自身を除く): 18243790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72973, 145946, 364865, 729730, 2116217, 4232434, 10581085, 21162170]

約数ペア:

[(1, 21162170), (2, 10581085), (5, 4232434), (10, 2116217), (29, 729730), (58, 364865), (145, 145946), (290, 72973)]