8188420

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1021}}^1$

素因数の和:1431

約数の個数: 24

約数和(自身を含む): 17255448

約数和(自身を除く): 9067028

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1021, 1604, 2005, 2042, 4010, 4084, 5105, 8020, 10210, 20420, 409421, 818842, 1637684, 2047105, 4094210, 8188420]

約数ペア:

[(1, 8188420), (2, 4094210), (4, 2047105), (5, 1637684), (10, 818842), (20, 409421), (401, 20420), (802, 10210), (1021, 8020), (1604, 5105), (2005, 4084), (2042, 4010)]