20487747

素因数分解:

$3^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{3137}}^1$

素因数の和:3458

約数の個数: 16

約数和(自身を含む): 31329792

約数和(自身を除く): 10842045

約数列:

[1, 3, 7, 21, 311, 933, 2177, 3137, 6531, 9411, 21959, 65877, 975607, 2926821, 6829249, 20487747]

約数ペア:

[(1, 20487747), (3, 6829249), (7, 2926821), (21, 975607), (311, 65877), (933, 21959), (2177, 9411), (3137, 6531)]