320123860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{326657}}^1$

素因数の和:326680

約数の個数: 36

約数和(自身を含む): 782019252

約数和(自身を除く): 461895392

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 326657, 653314, 1306628, 1633285, 2286599, 3266570, 4573198, 6533140, 9146396, 11432995, 16006193, 22865990, 32012386, 45731980, 64024772, 80030965, 160061930, 320123860]

約数ペア:

[(1, 320123860), (2, 160061930), (4, 80030965), (5, 64024772), (7, 45731980), (10, 32012386), (14, 22865990), (20, 16006193), (28, 11432995), (35, 9146396), (49, 6533140), (70, 4573198), (98, 3266570), (140, 2286599), (196, 1633285), (245, 1306628), (490, 653314), (980, 326657)]