21184520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75659}}^1$

素因数の和:75677

約数の個数: 32

約数和(自身を含む): 54475200

約数和(自身を除く): 33290680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75659, 151318, 302636, 378295, 529613, 605272, 756590, 1059226, 1513180, 2118452, 2648065, 3026360, 4236904, 5296130, 10592260, 21184520]

約数ペア:

[(1, 21184520), (2, 10592260), (4, 5296130), (5, 4236904), (7, 3026360), (8, 2648065), (10, 2118452), (14, 1513180), (20, 1059226), (28, 756590), (35, 605272), (40, 529613), (56, 378295), (70, 302636), (140, 151318), (280, 75659)]