21214827

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{313}}^1\times {\mathrm{443}}^1$

素因数の和:779

約数の個数: 24

約数和(自身を含む): 32623344

約数和(自身を除く): 11408517

約数列:

[1, 3, 9, 17, 51, 153, 313, 443, 939, 1329, 2817, 3987, 5321, 7531, 15963, 22593, 47889, 67779, 138659, 415977, 1247931, 2357203, 7071609, 21214827]

約数ペア:

[(1, 21214827), (3, 7071609), (9, 2357203), (17, 1247931), (51, 415977), (153, 138659), (313, 67779), (443, 47889), (939, 22593), (1329, 15963), (2817, 7531), (3987, 5321)]