677680

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:253

約数の個数: 40

約数和(自身を含む): 1620432

約数和(自身を除く): 942752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 197, 215, 344, 394, 430, 688, 788, 860, 985, 1576, 1720, 1970, 3152, 3440, 3940, 7880, 8471, 15760, 16942, 33884, 42355, 67768, 84710, 135536, 169420, 338840, 677680]

約数ペア:

[(1, 677680), (2, 338840), (4, 169420), (5, 135536), (8, 84710), (10, 67768), (16, 42355), (20, 33884), (40, 16942), (43, 15760), (80, 8471), (86, 7880), (172, 3940), (197, 3440), (215, 3152), (344, 1970), (394, 1720), (430, 1576), (688, 985), (788, 860)]