21478002

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{283}}^1$

素因数の和:447

約数の個数: 64

約数和(自身を含む): 53437440

約数和(自身を除く): 31959438

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 139, 182, 273, 278, 283, 417, 546, 566, 834, 849, 973, 1698, 1807, 1946, 1981, 2919, 3614, 3679, 3962, 5421, 5838, 5943, 7358, 10842, 11037, 11886, 12649, 22074, 25298, 25753, 37947, 39337, 51506, 75894, 77259, 78674, 118011, 154518, 236022, 275359, 511381, 550718, 826077, 1022762, 1534143, 1652154, 3068286, 3579667, 7159334, 10739001, 21478002]

約数ペア:

[(1, 21478002), (2, 10739001), (3, 7159334), (6, 3579667), (7, 3068286), (13, 1652154), (14, 1534143), (21, 1022762), (26, 826077), (39, 550718), (42, 511381), (78, 275359), (91, 236022), (139, 154518), (182, 118011), (273, 78674), (278, 77259), (283, 75894), (417, 51506), (546, 39337), (566, 37947), (834, 25753), (849, 25298), (973, 22074), (1698, 12649), (1807, 11886), (1946, 11037), (1981, 10842), (2919, 7358), (3614, 5943), (3679, 5838), (3962, 5421)]