16557680

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1489}}^1$

素因数の和:1641

約数の個数: 40

約数和(自身を含む): 38799600

約数和(自身を除く): 22241920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 1489, 2224, 2780, 2978, 5560, 5956, 7445, 11120, 11912, 14890, 23824, 29780, 59560, 119120, 206971, 413942, 827884, 1034855, 1655768, 2069710, 3311536, 4139420, 8278840, 16557680]

約数ペア:

[(1, 16557680), (2, 8278840), (4, 4139420), (5, 3311536), (8, 2069710), (10, 1655768), (16, 1034855), (20, 827884), (40, 413942), (80, 206971), (139, 119120), (278, 59560), (556, 29780), (695, 23824), (1112, 14890), (1390, 11912), (1489, 11120), (2224, 7445), (2780, 5956), (2978, 5560)]