21611499

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 37078272

約数和(自身を除く): 15466773

約数列:

[1, 3, 7, 13, 21, 39, 43, 49, 91, 129, 147, 263, 273, 301, 559, 637, 789, 903, 1677, 1841, 1911, 2107, 3419, 3913, 5523, 6321, 10257, 11309, 11739, 12887, 23933, 27391, 33927, 38661, 71799, 79163, 82173, 147017, 167531, 237489, 441051, 502593, 554141, 1029119, 1662423, 3087357, 7203833, 21611499]

約数ペア:

[(1, 21611499), (3, 7203833), (7, 3087357), (13, 1662423), (21, 1029119), (39, 554141), (43, 502593), (49, 441051), (91, 237489), (129, 167531), (147, 147017), (263, 82173), (273, 79163), (301, 71799), (559, 38661), (637, 33927), (789, 27391), (903, 23933), (1677, 12887), (1841, 11739), (1911, 11309), (2107, 10257), (3419, 6321), (3913, 5523)]