51516640

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{6571}}^1$

素因数の和:6600

約数の個数: 72

約数和(自身を含む): 141600312

約数和(自身を除く): 90083672

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 6571, 7840, 13142, 26284, 32855, 45997, 52568, 65710, 91994, 105136, 131420, 183988, 210272, 229985, 262840, 321979, 367976, 459970, 525680, 643958, 735952, 919940, 1051360, 1287916, 1471904, 1609895, 1839880, 2575832, 3219790, 3679760, 5151664, 6439580, 7359520, 10303328, 12879160, 25758320, 51516640]

約数ペア:

[(1, 51516640), (2, 25758320), (4, 12879160), (5, 10303328), (7, 7359520), (8, 6439580), (10, 5151664), (14, 3679760), (16, 3219790), (20, 2575832), (28, 1839880), (32, 1609895), (35, 1471904), (40, 1287916), (49, 1051360), (56, 919940), (70, 735952), (80, 643958), (98, 525680), (112, 459970), (140, 367976), (160, 321979), (196, 262840), (224, 229985), (245, 210272), (280, 183988), (392, 131420), (490, 105136), (560, 91994), (784, 65710), (980, 52568), (1120, 45997), (1568, 32855), (1960, 26284), (3920, 13142), (6571, 7840)]