7880740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{311}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 19079424

約数和(自身を除く): 11198684

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 181, 311, 362, 622, 724, 905, 1244, 1267, 1555, 1810, 2177, 2534, 3110, 3620, 4354, 5068, 6220, 6335, 8708, 10885, 12670, 21770, 25340, 43540, 56291, 112582, 225164, 281455, 394037, 562910, 788074, 1125820, 1576148, 1970185, 3940370, 7880740]

約数ペア:

[(1, 7880740), (2, 3940370), (4, 1970185), (5, 1576148), (7, 1125820), (10, 788074), (14, 562910), (20, 394037), (28, 281455), (35, 225164), (70, 112582), (140, 56291), (181, 43540), (311, 25340), (362, 21770), (622, 12670), (724, 10885), (905, 8708), (1244, 6335), (1267, 6220), (1555, 5068), (1810, 4354), (2177, 3620), (2534, 3110)]