21154744

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{15647}}^1$

素因数の和:15679

約数の個数: 24

約数和(自身を含む): 42953760

約数和(自身を除く): 21799016

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 676, 1352, 15647, 31294, 62588, 125176, 203411, 406822, 813644, 1627288, 2644343, 5288686, 10577372, 21154744]

約数ペア:

[(1, 21154744), (2, 10577372), (4, 5288686), (8, 2644343), (13, 1627288), (26, 813644), (52, 406822), (104, 203411), (169, 125176), (338, 62588), (676, 31294), (1352, 15647)]