81899272

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:267

約数の個数: 128

約数和(自身を含む): 206438400

約数和(自身を除く): 124539128

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 31, 38, 52, 56, 62, 76, 91, 104, 124, 133, 152, 182, 191, 217, 247, 248, 266, 364, 382, 403, 434, 494, 532, 589, 728, 764, 806, 868, 988, 1064, 1178, 1337, 1528, 1612, 1729, 1736, 1976, 2356, 2483, 2674, 2821, 3224, 3458, 3629, 4123, 4712, 4966, 5348, 5642, 5921, 6916, 7258, 7657, 8246, 9932, 10696, 11284, 11842, 13832, 14516, 15314, 16492, 17381, 19864, 22568, 23684, 25403, 29032, 30628, 32984, 34762, 41447, 47177, 47368, 50806, 53599, 61256, 69524, 76973, 82894, 94354, 101612, 107198, 112499, 139048, 153946, 165788, 188708, 203224, 214396, 224998, 307892, 330239, 331576, 377416, 428792, 449996, 538811, 615784, 660478, 787493, 899992, 1077622, 1320956, 1462487, 1574986, 2155244, 2641912, 2924974, 3149972, 4310488, 5849948, 6299944, 10237409, 11699896, 20474818, 40949636, 81899272]

約数ペア:

[(1, 81899272), (2, 40949636), (4, 20474818), (7, 11699896), (8, 10237409), (13, 6299944), (14, 5849948), (19, 4310488), (26, 3149972), (28, 2924974), (31, 2641912), (38, 2155244), (52, 1574986), (56, 1462487), (62, 1320956), (76, 1077622), (91, 899992), (104, 787493), (124, 660478), (133, 615784), (152, 538811), (182, 449996), (191, 428792), (217, 377416), (247, 331576), (248, 330239), (266, 307892), (364, 224998), (382, 214396), (403, 203224), (434, 188708), (494, 165788), (532, 153946), (589, 139048), (728, 112499), (764, 107198), (806, 101612), (868, 94354), (988, 82894), (1064, 76973), (1178, 69524), (1337, 61256), (1528, 53599), (1612, 50806), (1729, 47368), (1736, 47177), (1976, 41447), (2356, 34762), (2483, 32984), (2674, 30628), (2821, 29032), (3224, 25403), (3458, 23684), (3629, 22568), (4123, 19864), (4712, 17381), (4966, 16492), (5348, 15314), (5642, 14516), (5921, 13832), (6916, 11842), (7258, 11284), (7657, 10696), (8246, 9932)]