19997166

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{163}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 48365568

約数和(自身を除く): 28368402

約数列:

[1, 2, 3, 6, 7, 14, 21, 23, 42, 46, 69, 127, 138, 161, 163, 254, 322, 326, 381, 483, 489, 762, 889, 966, 978, 1141, 1778, 2282, 2667, 2921, 3423, 3749, 5334, 5842, 6846, 7498, 8763, 11247, 17526, 20447, 20701, 22494, 26243, 40894, 41402, 52486, 61341, 62103, 78729, 122682, 124206, 144907, 157458, 289814, 434721, 476123, 869442, 952246, 1428369, 2856738, 3332861, 6665722, 9998583, 19997166]

約数ペア:

[(1, 19997166), (2, 9998583), (3, 6665722), (6, 3332861), (7, 2856738), (14, 1428369), (21, 952246), (23, 869442), (42, 476123), (46, 434721), (69, 289814), (127, 157458), (138, 144907), (161, 124206), (163, 122682), (254, 78729), (322, 62103), (326, 61341), (381, 52486), (483, 41402), (489, 40894), (762, 26243), (889, 22494), (966, 20701), (978, 20447), (1141, 17526), (1778, 11247), (2282, 8763), (2667, 7498), (2921, 6846), (3423, 5842), (3749, 5334)]