20974695

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{28537}}^1$

素因数の和:28559

約数の個数: 24

約数和(自身を含む): 39039984

約数和(自身を除く): 18065289

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 28537, 85611, 142685, 199759, 428055, 599277, 998795, 1398313, 2996385, 4194939, 6991565, 20974695]

約数ペア:

[(1, 20974695), (3, 6991565), (5, 4194939), (7, 2996385), (15, 1398313), (21, 998795), (35, 599277), (49, 428055), (105, 199759), (147, 142685), (245, 85611), (735, 28537)]