18778865020

素因数分解:

$2^2\times 5^1\times {\mathrm{1021}}^1\times {\mathrm{919631}}^1$

素因数の和:920661

約数の個数: 24

約数和(自身を含む): 39474283968

約数和(自身を除く): 20695418948

約数列:

[1, 2, 4, 5, 10, 20, 1021, 2042, 4084, 5105, 10210, 20420, 919631, 1839262, 3678524, 4598155, 9196310, 18392620, 938943251, 1877886502, 3755773004, 4694716255, 9389432510, 18778865020]

約数ペア:

[(1, 18778865020), (2, 9389432510), (4, 4694716255), (5, 3755773004), (10, 1877886502), (20, 938943251), (1021, 18392620), (2042, 9196310), (4084, 4598155), (5105, 3678524), (10210, 1839262), (20420, 919631)]