21495639

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 33030144

約数和(自身を除く): 11534505

約数列:

[1, 3, 11, 23, 33, 69, 127, 223, 253, 381, 669, 759, 1397, 2453, 2921, 4191, 5129, 7359, 8763, 15387, 28321, 32131, 56419, 84963, 96393, 169257, 311531, 651383, 934593, 1954149, 7165213, 21495639]

約数ペア:

[(1, 21495639), (3, 7165213), (11, 1954149), (23, 934593), (33, 651383), (69, 311531), (127, 169257), (223, 96393), (253, 84963), (381, 56419), (669, 32131), (759, 28321), (1397, 15387), (2453, 8763), (2921, 7359), (4191, 5129)]