21439005

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2797}}^1$

素因数の和:2885

約数の個数: 32

約数和(自身を含む): 39753984

約数和(自身を除く): 18314979

約数列:

[1, 3, 5, 7, 15, 21, 35, 73, 105, 219, 365, 511, 1095, 1533, 2555, 2797, 7665, 8391, 13985, 19579, 41955, 58737, 97895, 204181, 293685, 612543, 1020905, 1429267, 3062715, 4287801, 7146335, 21439005]

約数ペア:

[(1, 21439005), (3, 7146335), (5, 4287801), (7, 3062715), (15, 1429267), (21, 1020905), (35, 612543), (73, 293685), (105, 204181), (219, 97895), (365, 58737), (511, 41955), (1095, 19579), (1533, 13985), (2555, 8391), (2797, 7665)]