21405258

素因数分解:

$2^1\times 3^2\times 7^3\times {\mathrm{3467}}^1$

素因数の和:3496

約数の個数: 48

約数和(自身を含む): 54100800

約数和(自身を除く): 32695542

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 147, 294, 343, 441, 686, 882, 1029, 2058, 3087, 3467, 6174, 6934, 10401, 20802, 24269, 31203, 48538, 62406, 72807, 145614, 169883, 218421, 339766, 436842, 509649, 1019298, 1189181, 1528947, 2378362, 3057894, 3567543, 7135086, 10702629, 21405258]

約数ペア:

[(1, 21405258), (2, 10702629), (3, 7135086), (6, 3567543), (7, 3057894), (9, 2378362), (14, 1528947), (18, 1189181), (21, 1019298), (42, 509649), (49, 436842), (63, 339766), (98, 218421), (126, 169883), (147, 145614), (294, 72807), (343, 62406), (441, 48538), (686, 31203), (882, 24269), (1029, 20802), (2058, 10401), (3087, 6934), (3467, 6174)]