21078924

素因数分解:

$2^2\times 3^1\times {\mathrm{263}}^1\times {\mathrm{6679}}^1$

素因数の和:6949

約数の個数: 24

約数和(自身を含む): 49378560

約数和(自身を除く): 28299636

約数列:

[1, 2, 3, 4, 6, 12, 263, 526, 789, 1052, 1578, 3156, 6679, 13358, 20037, 26716, 40074, 80148, 1756577, 3513154, 5269731, 7026308, 10539462, 21078924]

約数ペア:

[(1, 21078924), (2, 10539462), (3, 7026308), (4, 5269731), (6, 3513154), (12, 1756577), (263, 80148), (526, 40074), (789, 26716), (1052, 20037), (1578, 13358), (3156, 6679)]