21318031

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{1553}}^1$

素因数の和:1650

約数の個数: 16

約数和(自身を含む): 25510464

約数和(自身を除く): 4192433

約数列:

[1, 7, 37, 53, 259, 371, 1553, 1961, 10871, 13727, 57461, 82309, 402227, 576163, 3045433, 21318031]

約数ペア:

[(1, 21318031), (7, 3045433), (37, 576163), (53, 402227), (259, 82309), (371, 57461), (1553, 13727), (1961, 10871)]