642950

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1$

素因数の和:197

約数の個数: 48

約数和(自身を含む): 1499904

約数和(自身を除く): 856954

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 77, 110, 154, 167, 175, 275, 334, 350, 385, 550, 770, 835, 1169, 1670, 1837, 1925, 2338, 3674, 3850, 4175, 5845, 8350, 9185, 11690, 12859, 18370, 25718, 29225, 45925, 58450, 64295, 91850, 128590, 321475, 642950]

約数ペア:

[(1, 642950), (2, 321475), (5, 128590), (7, 91850), (10, 64295), (11, 58450), (14, 45925), (22, 29225), (25, 25718), (35, 18370), (50, 12859), (55, 11690), (70, 9185), (77, 8350), (110, 5845), (154, 4175), (167, 3850), (175, 3674), (275, 2338), (334, 1925), (350, 1837), (385, 1670), (550, 1169), (770, 835)]