21081018

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:331

約数の個数: 64

約数和(自身を含む): 50964480

約数和(自身を除く): 29883462

約数列:

[1, 2, 3, 6, 7, 14, 21, 23, 42, 46, 69, 138, 139, 157, 161, 278, 314, 322, 417, 471, 483, 834, 942, 966, 973, 1099, 1946, 2198, 2919, 3197, 3297, 3611, 5838, 6394, 6594, 7222, 9591, 10833, 19182, 21666, 21823, 22379, 25277, 43646, 44758, 50554, 65469, 67137, 75831, 130938, 134274, 151662, 152761, 305522, 458283, 501929, 916566, 1003858, 1505787, 3011574, 3513503, 7027006, 10540509, 21081018]

約数ペア:

[(1, 21081018), (2, 10540509), (3, 7027006), (6, 3513503), (7, 3011574), (14, 1505787), (21, 1003858), (23, 916566), (42, 501929), (46, 458283), (69, 305522), (138, 152761), (139, 151662), (157, 134274), (161, 130938), (278, 75831), (314, 67137), (322, 65469), (417, 50554), (471, 44758), (483, 43646), (834, 25277), (942, 22379), (966, 21823), (973, 21666), (1099, 19182), (1946, 10833), (2198, 9591), (2919, 7222), (3197, 6594), (3297, 6394), (3611, 5838)]