21085540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150611}}^1$

素因数の和:150627

約数の個数: 24

約数和(自身を含む): 50605632

約数和(自身を除く): 29520092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150611, 301222, 602444, 753055, 1054277, 1506110, 2108554, 3012220, 4217108, 5271385, 10542770, 21085540]

約数ペア:

[(1, 21085540), (2, 10542770), (4, 5271385), (5, 4217108), (7, 3012220), (10, 2108554), (14, 1506110), (20, 1054277), (28, 753055), (35, 602444), (70, 301222), (140, 150611)]