21479913

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26227}}^1$

素因数の和:26253

約数の個数: 24

約数和(自身を含む): 38187968

約数和(自身を除く): 16708055

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26227, 78681, 183589, 236043, 340951, 550767, 1022853, 1652301, 2386657, 3068559, 7159971, 21479913]

約数ペア:

[(1, 21479913), (3, 7159971), (7, 3068559), (9, 2386657), (13, 1652301), (21, 1022853), (39, 550767), (63, 340951), (91, 236043), (117, 183589), (273, 78681), (819, 26227)]