400260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{953}}^1$

素因数の和:972

約数の個数: 48

約数和(自身を含む): 1282176

約数和(自身を除く): 881916

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 953, 1906, 2859, 3812, 4765, 5718, 6671, 9530, 11436, 13342, 14295, 19060, 20013, 26684, 28590, 33355, 40026, 57180, 66710, 80052, 100065, 133420, 200130, 400260]

約数ペア:

[(1, 400260), (2, 200130), (3, 133420), (4, 100065), (5, 80052), (6, 66710), (7, 57180), (10, 40026), (12, 33355), (14, 28590), (15, 26684), (20, 20013), (21, 19060), (28, 14295), (30, 13342), (35, 11436), (42, 9530), (60, 6671), (70, 5718), (84, 4765), (105, 3812), (140, 2859), (210, 1906), (420, 953)]