20368551

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{719}}^1$

素因数の和:819

約数の個数: 32

約数和(自身を含む): 33177600

約数和(自身を除く): 12809049

約数列:

[1, 3, 7, 19, 21, 57, 71, 133, 213, 399, 497, 719, 1349, 1491, 2157, 4047, 5033, 9443, 13661, 15099, 28329, 40983, 51049, 95627, 153147, 286881, 357343, 969931, 1072029, 2909793, 6789517, 20368551]

約数ペア:

[(1, 20368551), (3, 6789517), (7, 2909793), (19, 1072029), (21, 969931), (57, 357343), (71, 286881), (133, 153147), (213, 95627), (399, 51049), (497, 40983), (719, 28329), (1349, 15099), (1491, 13661), (2157, 9443), (4047, 5033)]