20247991

素因数分解:

${\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:334

約数の個数: 16

約数和(自身を含む): 21790720

約数和(自身を除く): 1542729

約数列:

[1, 31, 37, 127, 139, 1147, 3937, 4309, 4699, 5143, 17653, 145669, 159433, 547243, 653161, 20247991]

約数ペア:

[(1, 20247991), (31, 653161), (37, 547243), (127, 159433), (139, 145669), (1147, 17653), (3937, 5143), (4309, 4699)]