21518794

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{13399}}^1$

素因数の和:13485

約数の個数: 16

約数和(自身を含む): 35697600

約数和(自身を除く): 14178806

約数列:

[1, 2, 11, 22, 73, 146, 803, 1606, 13399, 26798, 147389, 294778, 978127, 1956254, 10759397, 21518794]

約数ペア:

[(1, 21518794), (2, 10759397), (11, 1956254), (22, 978127), (73, 294778), (146, 147389), (803, 26798), (1606, 13399)]