21000688788

素因数分解:

$2^2\times 3^1\times {\mathrm{139}}^1\times {\mathrm{433}}^1\times {\mathrm{29077}}^1$

素因数の和:29656

約数の個数: 48

約数和(自身を含む): 49469819840

約数和(自身を除く): 28469131052

約数列:

[1, 2, 3, 4, 6, 12, 139, 278, 417, 433, 556, 834, 866, 1299, 1668, 1732, 2598, 5196, 29077, 58154, 60187, 87231, 116308, 120374, 174462, 180561, 240748, 348924, 361122, 722244, 4041703, 8083406, 12125109, 12590341, 16166812, 24250218, 25180682, 37771023, 48500436, 50361364, 75542046, 151084092, 1750057399, 3500114798, 5250172197, 7000229596, 10500344394, 21000688788]

約数ペア:

[(1, 21000688788), (2, 10500344394), (3, 7000229596), (4, 5250172197), (6, 3500114798), (12, 1750057399), (139, 151084092), (278, 75542046), (417, 50361364), (433, 48500436), (556, 37771023), (834, 25180682), (866, 24250218), (1299, 16166812), (1668, 12590341), (1732, 12125109), (2598, 8083406), (5196, 4041703), (29077, 722244), (58154, 361122), (60187, 348924), (87231, 240748), (116308, 180561), (120374, 174462)]