21855918

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{520379}}^1$

素因数の和:520391

約数の個数: 16

約数和(自身を含む): 49956480

約数和(自身を除く): 28100562

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 520379, 1040758, 1561137, 3122274, 3642653, 7285306, 10927959, 21855918]

約数ペア:

[(1, 21855918), (2, 10927959), (3, 7285306), (6, 3642653), (7, 3122274), (14, 1561137), (21, 1040758), (42, 520379)]