20313020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11161}}^1$

素因数の和:11190

約数の個数: 48

約数和(自身を含む): 52506048

約数和(自身を除く): 32193028

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, 11161, 22322, 44644, 55805, 78127, 111610, 145093, 156254, 223220, 290186, 312508, 390635, 580372, 725465, 781270, 1015651, 1450930, 1562540, 2031302, 2901860, 4062604, 5078255, 10156510, 20313020]

約数ペア:

[(1, 20313020), (2, 10156510), (4, 5078255), (5, 4062604), (7, 2901860), (10, 2031302), (13, 1562540), (14, 1450930), (20, 1015651), (26, 781270), (28, 725465), (35, 580372), (52, 390635), (65, 312508), (70, 290186), (91, 223220), (130, 156254), (140, 145093), (182, 111610), (260, 78127), (364, 55805), (455, 44644), (910, 22322), (1820, 11161)]