398888560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{712301}}^1$

素因数の和:712321

約数の個数: 40

約数和(自身を含む): 1059905376

約数和(自身を除く): 661016816

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 712301, 1424602, 2849204, 3561505, 4986107, 5698408, 7123010, 9972214, 11396816, 14246020, 19944428, 24930535, 28492040, 39888856, 49861070, 56984080, 79777712, 99722140, 199444280, 398888560]

約数ペア:

[(1, 398888560), (2, 199444280), (4, 99722140), (5, 79777712), (7, 56984080), (8, 49861070), (10, 39888856), (14, 28492040), (16, 24930535), (20, 19944428), (28, 14246020), (35, 11396816), (40, 9972214), (56, 7123010), (70, 5698408), (80, 4986107), (112, 3561505), (140, 2849204), (280, 1424602), (560, 712301)]