81311776

素因数分解:

$2^5\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3989}}^1$

素因数の和:4026

約数の個数: 72

約数和(自身を含む): 200593260

約数和(自身を除く): 119281484

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 91, 98, 104, 112, 182, 196, 208, 224, 364, 392, 416, 637, 728, 784, 1274, 1456, 1568, 2548, 2912, 3989, 5096, 7978, 10192, 15956, 20384, 27923, 31912, 51857, 55846, 63824, 103714, 111692, 127648, 195461, 207428, 223384, 362999, 390922, 414856, 446768, 725998, 781844, 829712, 893536, 1451996, 1563688, 1659424, 2540993, 2903992, 3127376, 5081986, 5807984, 6254752, 10163972, 11615968, 20327944, 40655888, 81311776]

約数ペア:

[(1, 81311776), (2, 40655888), (4, 20327944), (7, 11615968), (8, 10163972), (13, 6254752), (14, 5807984), (16, 5081986), (26, 3127376), (28, 2903992), (32, 2540993), (49, 1659424), (52, 1563688), (56, 1451996), (91, 893536), (98, 829712), (104, 781844), (112, 725998), (182, 446768), (196, 414856), (208, 390922), (224, 362999), (364, 223384), (392, 207428), (416, 195461), (637, 127648), (728, 111692), (784, 103714), (1274, 63824), (1456, 55846), (1568, 51857), (2548, 31912), (2912, 27923), (3989, 20384), (5096, 15956), (7978, 10192)]