21680758

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{6277}}^1$

素因数の和:6447

約数の個数: 16

約数和(自身を含む): 35709264

約数和(自身を除く): 14028506

約数列:

[1, 2, 11, 22, 157, 314, 1727, 3454, 6277, 12554, 69047, 138094, 985489, 1970978, 10840379, 21680758]

約数ペア:

[(1, 21680758), (2, 10840379), (11, 1970978), (22, 985489), (157, 138094), (314, 69047), (1727, 12554), (3454, 6277)]