21909654

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{859}}^1$

素因数の和:989

約数の個数: 48

約数和(自身を含む): 51651600

約数和(自身を除く): 29741946

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 109, 117, 218, 234, 327, 654, 859, 981, 1417, 1718, 1962, 2577, 2834, 4251, 5154, 7731, 8502, 11167, 12753, 15462, 22334, 25506, 33501, 67002, 93631, 100503, 187262, 201006, 280893, 561786, 842679, 1217203, 1685358, 2434406, 3651609, 7303218, 10954827, 21909654]

約数ペア:

[(1, 21909654), (2, 10954827), (3, 7303218), (6, 3651609), (9, 2434406), (13, 1685358), (18, 1217203), (26, 842679), (39, 561786), (78, 280893), (109, 201006), (117, 187262), (218, 100503), (234, 93631), (327, 67002), (654, 33501), (859, 25506), (981, 22334), (1417, 15462), (1718, 12753), (1962, 11167), (2577, 8502), (2834, 7731), (4251, 5154)]