21559863

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 32413696

約数和(自身を除く): 10853833

約数列:

[1, 3, 13, 37, 39, 67, 111, 201, 223, 481, 669, 871, 1443, 2479, 2613, 2899, 7437, 8251, 8697, 14941, 24753, 32227, 44823, 96681, 107263, 194233, 321789, 552817, 582699, 1658451, 7186621, 21559863]

約数ペア:

[(1, 21559863), (3, 7186621), (13, 1658451), (37, 582699), (39, 552817), (67, 321789), (111, 194233), (201, 107263), (223, 96681), (481, 44823), (669, 32227), (871, 24753), (1443, 14941), (2479, 8697), (2613, 8251), (2899, 7437)]