81291924

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{491}}^1$

素因数の和:587

約数の個数: 120

約数和(自身を含む): 246700608

約数和(自身を除く): 165408684

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 73, 81, 84, 108, 126, 146, 162, 189, 219, 252, 292, 324, 378, 438, 491, 511, 567, 657, 756, 876, 982, 1022, 1134, 1314, 1473, 1533, 1964, 1971, 2044, 2268, 2628, 2946, 3066, 3437, 3942, 4419, 4599, 5892, 5913, 6132, 6874, 7884, 8838, 9198, 10311, 11826, 13257, 13748, 13797, 17676, 18396, 20622, 23652, 26514, 27594, 30933, 35843, 39771, 41244, 41391, 53028, 55188, 61866, 71686, 79542, 82782, 92799, 107529, 123732, 143372, 159084, 165564, 185598, 215058, 250901, 278397, 322587, 371196, 430116, 501802, 556794, 645174, 752703, 967761, 1003604, 1113588, 1290348, 1505406, 1935522, 2258109, 2903283, 3010812, 3871044, 4516218, 5806566, 6774327, 9032436, 11613132, 13548654, 20322981, 27097308, 40645962, 81291924]

約数ペア:

[(1, 81291924), (2, 40645962), (3, 27097308), (4, 20322981), (6, 13548654), (7, 11613132), (9, 9032436), (12, 6774327), (14, 5806566), (18, 4516218), (21, 3871044), (27, 3010812), (28, 2903283), (36, 2258109), (42, 1935522), (54, 1505406), (63, 1290348), (73, 1113588), (81, 1003604), (84, 967761), (108, 752703), (126, 645174), (146, 556794), (162, 501802), (189, 430116), (219, 371196), (252, 322587), (292, 278397), (324, 250901), (378, 215058), (438, 185598), (491, 165564), (511, 159084), (567, 143372), (657, 123732), (756, 107529), (876, 92799), (982, 82782), (1022, 79542), (1134, 71686), (1314, 61866), (1473, 55188), (1533, 53028), (1964, 41391), (1971, 41244), (2044, 39771), (2268, 35843), (2628, 30933), (2946, 27594), (3066, 26514), (3437, 23652), (3942, 20622), (4419, 18396), (4599, 17676), (5892, 13797), (5913, 13748), (6132, 13257), (6874, 11826), (7884, 10311), (8838, 9198)]