21249986

素因数分解:

$2^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{911}}^1$

素因数の和:1129

約数の個数: 16

約数和(自身を含む): 32503680

約数和(自身を除く): 11253694

約数列:

[1, 2, 107, 109, 214, 218, 911, 1822, 11663, 23326, 97477, 99299, 194954, 198598, 10624993, 21249986]

約数ペア:

[(1, 21249986), (2, 10624993), (107, 198598), (109, 194954), (214, 99299), (218, 97477), (911, 23326), (1822, 11663)]