20142871

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{293}}^1$

素因数の和:391

約数の個数: 24

約数和(自身を含む): 24935904

約数和(自身を除く): 4793033

約数列:

[1, 7, 23, 49, 61, 161, 293, 427, 1127, 1403, 2051, 2989, 6739, 9821, 14357, 17873, 47173, 68747, 125111, 330211, 411079, 875777, 2877553, 20142871]

約数ペア:

[(1, 20142871), (7, 2877553), (23, 875777), (49, 411079), (61, 330211), (161, 125111), (293, 68747), (427, 47173), (1127, 17873), (1403, 14357), (2051, 9821), (2989, 6739)]