21921345

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{25639}}^1$

素因数の和:25669

約数の個数: 24

約数和(自身を含む): 39998400

約数和(自身を除く): 18077055

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 25639, 76917, 128195, 230751, 384585, 487141, 1153755, 1461423, 2435705, 4384269, 7307115, 21921345]

約数ペア:

[(1, 21921345), (3, 7307115), (5, 4384269), (9, 2435705), (15, 1461423), (19, 1153755), (45, 487141), (57, 384585), (95, 230751), (171, 128195), (285, 76917), (855, 25639)]