139049380

素因数分解:

$2^2\times 5^1\times {\mathrm{1621}}^1\times {\mathrm{4289}}^1$

素因数の和:5919

約数の個数: 24

約数和(自身を含む): 292251960

約数和(自身を除く): 153202580

約数列:

[1, 2, 4, 5, 10, 20, 1621, 3242, 4289, 6484, 8105, 8578, 16210, 17156, 21445, 32420, 42890, 85780, 6952469, 13904938, 27809876, 34762345, 69524690, 139049380]

約数ペア:

[(1, 139049380), (2, 69524690), (4, 34762345), (5, 27809876), (10, 13904938), (20, 6952469), (1621, 85780), (3242, 42890), (4289, 32420), (6484, 21445), (8105, 17156), (8578, 16210)]