21897405

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8537}}^1$

素因数の和:8570

約数の個数: 32

約数和(自身を含む): 40982400

約数和(自身を除く): 19084995

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 8537, 25611, 42685, 76833, 128055, 162203, 230499, 384165, 486609, 811015, 1152495, 1459827, 2433045, 4379481, 7299135, 21897405]

約数ペア:

[(1, 21897405), (3, 7299135), (5, 4379481), (9, 2433045), (15, 1459827), (19, 1152495), (27, 811015), (45, 486609), (57, 384165), (95, 230499), (135, 162203), (171, 128055), (285, 76833), (513, 42685), (855, 25611), (2565, 8537)]