21528939

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{1063}}^1$

素因数の和:1266

約数の個数: 16

約数和(自身を含む): 29587712

約数和(自身を除く): 8058773

約数列:

[1, 3, 43, 129, 157, 471, 1063, 3189, 6751, 20253, 45709, 137127, 166891, 500673, 7176313, 21528939]

約数ペア:

[(1, 21528939), (3, 7176313), (43, 500673), (129, 166891), (157, 137127), (471, 45709), (1063, 20253), (3189, 6751)]