81320988

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:320

約数の個数: 144

約数和(自身を含む): 241315200

約数和(自身を除く): 159994212

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 29, 38, 42, 49, 57, 58, 76, 84, 87, 98, 114, 116, 133, 147, 174, 196, 203, 228, 251, 266, 294, 348, 399, 406, 502, 532, 551, 588, 609, 753, 798, 812, 931, 1004, 1102, 1218, 1421, 1506, 1596, 1653, 1757, 1862, 2204, 2436, 2793, 2842, 3012, 3306, 3514, 3724, 3857, 4263, 4769, 5271, 5586, 5684, 6612, 7028, 7279, 7714, 8526, 9538, 10542, 11172, 11571, 12299, 14307, 14558, 15428, 17052, 19076, 21084, 21837, 23142, 24598, 26999, 28614, 29116, 33383, 36897, 43674, 46284, 49196, 50953, 53998, 57228, 66766, 73794, 80997, 87348, 100149, 101906, 107996, 133532, 138301, 147588, 152859, 161994, 200298, 203812, 233681, 276602, 305718, 323988, 356671, 400596, 414903, 467362, 553204, 611436, 701043, 713342, 829806, 934724, 968107, 1070013, 1402086, 1426684, 1659612, 1936214, 2140026, 2804172, 2904321, 3872428, 4280052, 5808642, 6776749, 11617284, 13553498, 20330247, 27106996, 40660494, 81320988]

約数ペア:

[(1, 81320988), (2, 40660494), (3, 27106996), (4, 20330247), (6, 13553498), (7, 11617284), (12, 6776749), (14, 5808642), (19, 4280052), (21, 3872428), (28, 2904321), (29, 2804172), (38, 2140026), (42, 1936214), (49, 1659612), (57, 1426684), (58, 1402086), (76, 1070013), (84, 968107), (87, 934724), (98, 829806), (114, 713342), (116, 701043), (133, 611436), (147, 553204), (174, 467362), (196, 414903), (203, 400596), (228, 356671), (251, 323988), (266, 305718), (294, 276602), (348, 233681), (399, 203812), (406, 200298), (502, 161994), (532, 152859), (551, 147588), (588, 138301), (609, 133532), (753, 107996), (798, 101906), (812, 100149), (931, 87348), (1004, 80997), (1102, 73794), (1218, 66766), (1421, 57228), (1506, 53998), (1596, 50953), (1653, 49196), (1757, 46284), (1862, 43674), (2204, 36897), (2436, 33383), (2793, 29116), (2842, 28614), (3012, 26999), (3306, 24598), (3514, 23142), (3724, 21837), (3857, 21084), (4263, 19076), (4769, 17052), (5271, 15428), (5586, 14558), (5684, 14307), (6612, 12299), (7028, 11571), (7279, 11172), (7714, 10542), (8526, 9538)]