20928193

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4721}}^1$

素因数の和:4776

約数の個数: 16

約数和(自身を含む): 25385472

約数和(自身を除く): 4457279

約数列:

[1, 11, 13, 31, 143, 341, 403, 4433, 4721, 51931, 61373, 146351, 675103, 1609861, 1902563, 20928193]

約数ペア:

[(1, 20928193), (11, 1902563), (13, 1609861), (31, 675103), (143, 146351), (341, 61373), (403, 51931), (4433, 4721)]