21491788031

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{409}}^1\times {\mathrm{36979}}^1$

素因数の和:37431

約数の個数: 24

約数和(自身を含む): 25926678000

約数和(自身を除く): 4434889969

約数列:

[1, 7, 29, 49, 203, 409, 1421, 2863, 11861, 20041, 36979, 83027, 258853, 581189, 1072391, 1811971, 7506737, 15124411, 52547159, 105870877, 438607919, 741096139, 3070255433, 21491788031]

約数ペア:

[(1, 21491788031), (7, 3070255433), (29, 741096139), (49, 438607919), (203, 105870877), (409, 52547159), (1421, 15124411), (2863, 7506737), (11861, 1811971), (20041, 1072391), (36979, 581189), (83027, 258853)]