21488765

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{1049}}^1$

素因数の和:1312

約数の個数: 16

約数和(自身を含む): 27442800

約数和(自身を除く): 5954035

約数列:

[1, 5, 17, 85, 241, 1049, 1205, 4097, 5245, 17833, 20485, 89165, 252809, 1264045, 4297753, 21488765]

約数ペア:

[(1, 21488765), (5, 4297753), (17, 1264045), (85, 252809), (241, 89165), (1049, 20485), (1205, 17833), (4097, 5245)]