21069423

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{613}}^1$

素因数の和:708

約数の個数: 32

約数和(自身を含む): 33401600

約数和(自身を除く): 12332177

約数列:

[1, 3, 9, 19, 27, 57, 67, 171, 201, 513, 603, 613, 1273, 1809, 1839, 3819, 5517, 11457, 11647, 16551, 34371, 34941, 41071, 104823, 123213, 314469, 369639, 780349, 1108917, 2341047, 7023141, 21069423]

約数ペア:

[(1, 21069423), (3, 7023141), (9, 2341047), (19, 1108917), (27, 780349), (57, 369639), (67, 314469), (171, 123213), (201, 104823), (513, 41071), (603, 34941), (613, 34371), (1273, 16551), (1809, 11647), (1839, 11457), (3819, 5517)]