28330280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{67}}^1$

素因数の和:151

約数の個数: 96

約数和(自身を含む): 72925920

約数和(自身を除く): 44595640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 67, 88, 110, 124, 134, 155, 220, 248, 268, 310, 335, 341, 440, 536, 620, 670, 682, 737, 961, 1240, 1340, 1364, 1474, 1705, 1922, 2077, 2680, 2728, 2948, 3410, 3685, 3844, 4154, 4805, 5896, 6820, 7370, 7688, 8308, 9610, 10385, 10571, 13640, 14740, 16616, 19220, 20770, 21142, 22847, 29480, 38440, 41540, 42284, 45694, 52855, 64387, 83080, 84568, 91388, 105710, 114235, 128774, 182776, 211420, 228470, 257548, 321935, 422840, 456940, 515096, 643870, 708257, 913880, 1287740, 1416514, 2575480, 2833028, 3541285, 5666056, 7082570, 14165140, 28330280]

約数ペア:

[(1, 28330280), (2, 14165140), (4, 7082570), (5, 5666056), (8, 3541285), (10, 2833028), (11, 2575480), (20, 1416514), (22, 1287740), (31, 913880), (40, 708257), (44, 643870), (55, 515096), (62, 456940), (67, 422840), (88, 321935), (110, 257548), (124, 228470), (134, 211420), (155, 182776), (220, 128774), (248, 114235), (268, 105710), (310, 91388), (335, 84568), (341, 83080), (440, 64387), (536, 52855), (620, 45694), (670, 42284), (682, 41540), (737, 38440), (961, 29480), (1240, 22847), (1340, 21142), (1364, 20770), (1474, 19220), (1705, 16616), (1922, 14740), (2077, 13640), (2680, 10571), (2728, 10385), (2948, 9610), (3410, 8308), (3685, 7688), (3844, 7370), (4154, 6820), (4805, 5896)]