21040070

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{26633}}^1$

素因数の和:26719

約数の個数: 16

約数和(自身を含む): 38352960

約数和(自身を除く): 17312890

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 26633, 53266, 133165, 266330, 2104007, 4208014, 10520035, 21040070]

約数ペア:

[(1, 21040070), (2, 10520035), (5, 4208014), (10, 2104007), (79, 266330), (158, 133165), (395, 53266), (790, 26633)]