78680540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{479}}^1$

素因数の和:722

約数の個数: 48

約数和(自身を含む): 170311680

約数和(自身を除く): 91631140

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 191, 215, 382, 430, 479, 764, 860, 955, 958, 1910, 1916, 2395, 3820, 4790, 8213, 9580, 16426, 20597, 32852, 41065, 41194, 82130, 82388, 91489, 102985, 164260, 182978, 205970, 365956, 411940, 457445, 914890, 1829780, 3934027, 7868054, 15736108, 19670135, 39340270, 78680540]

約数ペア:

[(1, 78680540), (2, 39340270), (4, 19670135), (5, 15736108), (10, 7868054), (20, 3934027), (43, 1829780), (86, 914890), (172, 457445), (191, 411940), (215, 365956), (382, 205970), (430, 182978), (479, 164260), (764, 102985), (860, 91489), (955, 82388), (958, 82130), (1910, 41194), (1916, 41065), (2395, 32852), (3820, 20597), (4790, 16426), (8213, 9580)]