20802040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74293}}^1$

素因数の和:74311

約数の個数: 32

約数和(自身を含む): 53491680

約数和(自身を除く): 32689640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74293, 148586, 297172, 371465, 520051, 594344, 742930, 1040102, 1485860, 2080204, 2600255, 2971720, 4160408, 5200510, 10401020, 20802040]

約数ペア:

[(1, 20802040), (2, 10401020), (4, 5200510), (5, 4160408), (7, 2971720), (8, 2600255), (10, 2080204), (14, 1485860), (20, 1040102), (28, 742930), (35, 594344), (40, 520051), (56, 371465), (70, 297172), (140, 148586), (280, 74293)]