20117391

素因数分解:

$3^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{1279}}^1$

素因数の和:1403

約数の個数: 24

約数和(自身を含む): 31518720

約数和(自身を除く): 11401329

約数列:

[1, 3, 7, 21, 49, 107, 147, 321, 749, 1279, 2247, 3837, 5243, 8953, 15729, 26859, 62671, 136853, 188013, 410559, 957971, 2873913, 6705797, 20117391]

約数ペア:

[(1, 20117391), (3, 6705797), (7, 2873913), (21, 957971), (49, 410559), (107, 188013), (147, 136853), (321, 62671), (749, 26859), (1279, 15729), (2247, 8953), (3837, 5243)]