21764540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155461}}^1$

素因数の和:155477

約数の個数: 24

約数和(自身を含む): 52235232

約数和(自身を除く): 30470692

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155461, 310922, 621844, 777305, 1088227, 1554610, 2176454, 3109220, 4352908, 5441135, 10882270, 21764540]

約数ペア:

[(1, 21764540), (2, 10882270), (4, 5441135), (5, 4352908), (7, 3109220), (10, 2176454), (14, 1554610), (20, 1088227), (28, 777305), (35, 621844), (70, 310922), (140, 155461)]