20309380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11159}}^1$

素因数の和:11188

約数の個数: 48

約数和(自身を含む): 52496640

約数和(自身を除く): 32187260

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11159, 22318, 44636, 55795, 78113, 111590, 145067, 156226, 223180, 290134, 312452, 390565, 580268, 725335, 781130, 1015469, 1450670, 1562260, 2030938, 2901340, 4061876, 5077345, 10154690, 20309380]

約数ペア:

[(1, 20309380), (2, 10154690), (4, 5077345), (5, 4061876), (7, 2901340), (10, 2030938), (13, 1562260), (14, 1450670), (20, 1015469), (26, 781130), (28, 725335), (35, 580268), (52, 390565), (65, 312452), (70, 290134), (91, 223180), (130, 156226), (140, 145067), (182, 111590), (260, 78113), (364, 55795), (455, 44636), (910, 22318), (1820, 11159)]