21115926

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{90239}}^1$

素因数の和:90260

約数の個数: 24

約数和(自身を含む): 49271040

約数和(自身を除く): 28155114

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 90239, 180478, 270717, 541434, 812151, 1173107, 1624302, 2346214, 3519321, 7038642, 10557963, 21115926]

約数ペア:

[(1, 21115926), (2, 10557963), (3, 7038642), (6, 3519321), (9, 2346214), (13, 1624302), (18, 1173107), (26, 812151), (39, 541434), (78, 270717), (117, 180478), (234, 90239)]