21121660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150869}}^1$

素因数の和:150885

約数の個数: 24

約数和(自身を含む): 50692320

約数和(自身を除く): 29570660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150869, 301738, 603476, 754345, 1056083, 1508690, 2112166, 3017380, 4224332, 5280415, 10560830, 21121660]

約数ペア:

[(1, 21121660), (2, 10560830), (4, 5280415), (5, 4224332), (7, 3017380), (10, 2112166), (14, 1508690), (20, 1056083), (28, 754345), (35, 603476), (70, 301738), (140, 150869)]