21289892

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{1021}}^1$

素因数の和:1439

約数の個数: 24

約数和(自身を含む): 40262712

約数和(自身を除く): 18972820

約数列:

[1, 2, 4, 13, 26, 52, 401, 802, 1021, 1604, 2042, 4084, 5213, 10426, 13273, 20852, 26546, 53092, 409421, 818842, 1637684, 5322473, 10644946, 21289892]

約数ペア:

[(1, 21289892), (2, 10644946), (4, 5322473), (13, 1637684), (26, 818842), (52, 409421), (401, 53092), (802, 26546), (1021, 20852), (1604, 13273), (2042, 10426), (4084, 5213)]