81542780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{12781}}^1$

素因数の和:12830

約数の個数: 48

約数和(自身を含む): 193263840

約数和(自身を除く): 111721060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 145, 220, 290, 319, 580, 638, 1276, 1595, 3190, 6380, 12781, 25562, 51124, 63905, 127810, 140591, 255620, 281182, 370649, 562364, 702955, 741298, 1405910, 1482596, 1853245, 2811820, 3706490, 4077139, 7412980, 8154278, 16308556, 20385695, 40771390, 81542780]

約数ペア:

[(1, 81542780), (2, 40771390), (4, 20385695), (5, 16308556), (10, 8154278), (11, 7412980), (20, 4077139), (22, 3706490), (29, 2811820), (44, 1853245), (55, 1482596), (58, 1405910), (110, 741298), (116, 702955), (145, 562364), (220, 370649), (290, 281182), (319, 255620), (580, 140591), (638, 127810), (1276, 63905), (1595, 51124), (3190, 25562), (6380, 12781)]