3980781

素因数分解:

$3^2\times 7^1\times {\mathrm{179}}^1\times {\mathrm{353}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 6626880

約数和(自身を除く): 2646099

約数列:

[1, 3, 7, 9, 21, 63, 179, 353, 537, 1059, 1253, 1611, 2471, 3177, 3759, 7413, 11277, 22239, 63187, 189561, 442309, 568683, 1326927, 3980781]

約数ペア:

[(1, 3980781), (3, 1326927), (7, 568683), (9, 442309), (21, 189561), (63, 63187), (179, 22239), (353, 11277), (537, 7413), (1059, 3759), (1253, 3177), (1611, 2471)]