20007533

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:682

約数の個数: 20

約数和(自身を含む): 25175388

約数和(自身を除く): 5167855

約数列:

[1, 7, 13, 49, 91, 343, 637, 641, 2401, 4459, 4487, 8333, 31213, 31409, 58331, 219863, 408317, 1539041, 2858219, 20007533]

約数ペア:

[(1, 20007533), (7, 2858219), (13, 1539041), (49, 408317), (91, 219863), (343, 58331), (637, 31409), (641, 31213), (2401, 8333), (4459, 4487)]