21895695

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{25609}}^1$

素因数の和:25639

約数の個数: 24

約数和(自身を含む): 39951600

約数和(自身を除く): 18055905

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 25609, 76827, 128045, 230481, 384135, 486571, 1152405, 1459713, 2432855, 4379139, 7298565, 21895695]

約数ペア:

[(1, 21895695), (3, 7298565), (5, 4379139), (9, 2432855), (15, 1459713), (19, 1152405), (45, 486571), (57, 384135), (95, 230481), (171, 128045), (285, 76827), (855, 25609)]