28346157

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 53352000

約数和(自身を除く): 25005843

約数列:

[1, 3, 7, 9, 17, 19, 21, 49, 51, 57, 63, 119, 133, 147, 153, 171, 199, 323, 357, 399, 441, 597, 833, 931, 969, 1071, 1197, 1393, 1791, 2261, 2499, 2793, 2907, 3383, 3781, 4179, 6783, 7497, 8379, 9751, 10149, 11343, 12537, 15827, 20349, 23681, 26467, 29253, 30447, 34029, 47481, 64277, 71043, 79401, 87759, 142443, 165767, 185269, 192831, 213129, 238203, 449939, 497301, 555807, 578493, 1349817, 1491903, 1667421, 3149573, 4049451, 9448719, 28346157]

約数ペア:

[(1, 28346157), (3, 9448719), (7, 4049451), (9, 3149573), (17, 1667421), (19, 1491903), (21, 1349817), (49, 578493), (51, 555807), (57, 497301), (63, 449939), (119, 238203), (133, 213129), (147, 192831), (153, 185269), (171, 165767), (199, 142443), (323, 87759), (357, 79401), (399, 71043), (441, 64277), (597, 47481), (833, 34029), (931, 30447), (969, 29253), (1071, 26467), (1197, 23681), (1393, 20349), (1791, 15827), (2261, 12537), (2499, 11343), (2793, 10149), (2907, 9751), (3383, 8379), (3781, 7497), (4179, 6783)]