28705768

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:207

約数の個数: 96

約数和(自身を含む): 69521760

約数和(自身を除く): 40815992

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 43, 49, 52, 56, 86, 91, 98, 104, 131, 172, 182, 196, 262, 301, 344, 364, 392, 524, 559, 602, 637, 728, 917, 1048, 1118, 1204, 1274, 1703, 1834, 2107, 2236, 2408, 2548, 3406, 3668, 3913, 4214, 4472, 5096, 5633, 6419, 6812, 7336, 7826, 8428, 11266, 11921, 12838, 13624, 15652, 16856, 22532, 23842, 25676, 27391, 31304, 39431, 45064, 47684, 51352, 54782, 73229, 78862, 83447, 95368, 109564, 146458, 157724, 166894, 219128, 276017, 292916, 315448, 333788, 512603, 552034, 585832, 667576, 1025206, 1104068, 2050412, 2208136, 3588221, 4100824, 7176442, 14352884, 28705768]

約数ペア:

[(1, 28705768), (2, 14352884), (4, 7176442), (7, 4100824), (8, 3588221), (13, 2208136), (14, 2050412), (26, 1104068), (28, 1025206), (43, 667576), (49, 585832), (52, 552034), (56, 512603), (86, 333788), (91, 315448), (98, 292916), (104, 276017), (131, 219128), (172, 166894), (182, 157724), (196, 146458), (262, 109564), (301, 95368), (344, 83447), (364, 78862), (392, 73229), (524, 54782), (559, 51352), (602, 47684), (637, 45064), (728, 39431), (917, 31304), (1048, 27391), (1118, 25676), (1204, 23842), (1274, 22532), (1703, 16856), (1834, 15652), (2107, 13624), (2236, 12838), (2408, 11921), (2548, 11266), (3406, 8428), (3668, 7826), (3913, 7336), (4214, 6812), (4472, 6419), (5096, 5633)]