21231963

素因数分解:

$3^4\times {\mathrm{17}}^2\times {\mathrm{907}}^1$

素因数の和:953

約数の個数: 30

約数和(自身を含む): 33729476

約数和(自身を除く): 12497513

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 289, 459, 867, 907, 1377, 2601, 2721, 7803, 8163, 15419, 23409, 24489, 46257, 73467, 138771, 262123, 416313, 786369, 1248939, 2359107, 7077321, 21231963]

約数ペア:

[(1, 21231963), (3, 7077321), (9, 2359107), (17, 1248939), (27, 786369), (51, 416313), (81, 262123), (153, 138771), (289, 73467), (459, 46257), (867, 24489), (907, 23409), (1377, 15419), (2601, 8163), (2721, 7803)]