28978173

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 51617280

約数和(自身を除く): 22639107

約数列:

[1, 3, 7, 9, 19, 21, 43, 57, 63, 129, 133, 171, 301, 387, 399, 563, 817, 903, 1197, 1689, 2451, 2709, 3941, 5067, 5719, 7353, 10697, 11823, 17157, 24209, 32091, 35469, 51471, 72627, 74879, 96273, 169463, 217881, 224637, 459971, 508389, 673911, 1379913, 1525167, 3219797, 4139739, 9659391, 28978173]

約数ペア:

[(1, 28978173), (3, 9659391), (7, 4139739), (9, 3219797), (19, 1525167), (21, 1379913), (43, 673911), (57, 508389), (63, 459971), (129, 224637), (133, 217881), (171, 169463), (301, 96273), (387, 74879), (399, 72627), (563, 51471), (817, 35469), (903, 32091), (1197, 24209), (1689, 17157), (2451, 11823), (2709, 10697), (3941, 7353), (5067, 5719)]