21211695

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{24809}}^1$

素因数の和:24839

約数の個数: 24

約数和(自身を含む): 38703600

約数和(自身を除く): 17491905

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 24809, 74427, 124045, 223281, 372135, 471371, 1116405, 1414113, 2356855, 4242339, 7070565, 21211695]

約数ペア:

[(1, 21211695), (3, 7070565), (5, 4242339), (9, 2356855), (15, 1414113), (19, 1116405), (45, 471371), (57, 372135), (95, 223281), (171, 124045), (285, 74427), (855, 24809)]