77787640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{277813}}^1$

素因数の和:277831

約数の個数: 32

約数和(自身を含む): 200026080

約数和(自身を除く): 122238440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 277813, 555626, 1111252, 1389065, 1944691, 2222504, 2778130, 3889382, 5556260, 7778764, 9723455, 11112520, 15557528, 19446910, 38893820, 77787640]

約数ペア:

[(1, 77787640), (2, 38893820), (4, 19446910), (5, 15557528), (7, 11112520), (8, 9723455), (10, 7778764), (14, 5556260), (20, 3889382), (28, 2778130), (35, 2222504), (40, 1944691), (56, 1389065), (70, 1111252), (140, 555626), (280, 277813)]