28968849

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 54442752

約数和(自身を除く): 25473903

約数列:

[1, 3, 7, 9, 13, 21, 31, 39, 49, 63, 91, 93, 117, 147, 163, 217, 273, 279, 403, 441, 489, 637, 651, 819, 1141, 1209, 1467, 1519, 1911, 1953, 2119, 2821, 3423, 3627, 4557, 5053, 5733, 6357, 7987, 8463, 10269, 13671, 14833, 15159, 19071, 19747, 23961, 25389, 35371, 44499, 45477, 59241, 65689, 71883, 103831, 106113, 133497, 177723, 197067, 247597, 311493, 318339, 459823, 591201, 742791, 934479, 1379469, 2228373, 3218761, 4138407, 9656283, 28968849]

約数ペア:

[(1, 28968849), (3, 9656283), (7, 4138407), (9, 3218761), (13, 2228373), (21, 1379469), (31, 934479), (39, 742791), (49, 591201), (63, 459823), (91, 318339), (93, 311493), (117, 247597), (147, 197067), (163, 177723), (217, 133497), (273, 106113), (279, 103831), (403, 71883), (441, 65689), (489, 59241), (637, 45477), (651, 44499), (819, 35371), (1141, 25389), (1209, 23961), (1467, 19747), (1519, 19071), (1911, 15159), (1953, 14833), (2119, 13671), (2821, 10269), (3423, 8463), (3627, 7987), (4557, 6357), (5053, 5733)]