180872181

素因数分解:

$3^2\times 7^2\times {\mathrm{410141}}^1$

素因数の和:410161

約数の個数: 18

約数和(自身を含む): 303915222

約数和(自身を除く): 123043041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 410141, 1230423, 2870987, 3691269, 8612961, 20096909, 25838883, 60290727, 180872181]

約数ペア:

[(1, 180872181), (3, 60290727), (7, 25838883), (9, 20096909), (21, 8612961), (49, 3691269), (63, 2870987), (147, 1230423), (441, 410141)]