207721409

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{4463}}^1$

素因数の和:4640

約数の個数: 16

約数和(自身を含む): 243555840

約数和(自身を除く): 35834431

約数列:

[1, 7, 61, 109, 427, 763, 4463, 6649, 31241, 46543, 272243, 486467, 1905701, 3405269, 29674487, 207721409]

約数ペア:

[(1, 207721409), (7, 29674487), (61, 3405269), (109, 1905701), (427, 486467), (763, 272243), (4463, 46543), (6649, 31241)]