21044390

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{34499}}^1$

素因数の和:34567

約数の個数: 16

約数和(自身を含む): 38502000

約数和(自身を除く): 17457610

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 34499, 68998, 172495, 344990, 2104439, 4208878, 10522195, 21044390]

約数ペア:

[(1, 21044390), (2, 10522195), (5, 4208878), (10, 2104439), (61, 344990), (122, 172495), (305, 68998), (610, 34499)]