21030777

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{6473}}^1$

素因数の和:6517

約数の個数: 18

約数和(自身を含む): 32065722

約数和(自身を除く): 11034945

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 6473, 19419, 58257, 122987, 368961, 1106883, 2336753, 7010259, 21030777]

約数ペア:

[(1, 21030777), (3, 7010259), (9, 2336753), (19, 1106883), (57, 368961), (171, 122987), (361, 58257), (1083, 19419), (3249, 6473)]