131439920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{761}}^1$

素因数の和:918

約数の個数: 80

約数和(自身を含む): 326550528

約数和(自身を除く): 195110608

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 127, 136, 170, 254, 272, 340, 508, 635, 680, 761, 1016, 1270, 1360, 1522, 2032, 2159, 2540, 3044, 3805, 4318, 5080, 6088, 7610, 8636, 10160, 10795, 12176, 12937, 15220, 17272, 21590, 25874, 30440, 34544, 43180, 51748, 60880, 64685, 86360, 96647, 103496, 129370, 172720, 193294, 206992, 258740, 386588, 483235, 517480, 773176, 966470, 1034960, 1546352, 1642999, 1932940, 3285998, 3865880, 6571996, 7731760, 8214995, 13143992, 16429990, 26287984, 32859980, 65719960, 131439920]

約数ペア:

[(1, 131439920), (2, 65719960), (4, 32859980), (5, 26287984), (8, 16429990), (10, 13143992), (16, 8214995), (17, 7731760), (20, 6571996), (34, 3865880), (40, 3285998), (68, 1932940), (80, 1642999), (85, 1546352), (127, 1034960), (136, 966470), (170, 773176), (254, 517480), (272, 483235), (340, 386588), (508, 258740), (635, 206992), (680, 193294), (761, 172720), (1016, 129370), (1270, 103496), (1360, 96647), (1522, 86360), (2032, 64685), (2159, 60880), (2540, 51748), (3044, 43180), (3805, 34544), (4318, 30440), (5080, 25874), (6088, 21590), (7610, 17272), (8636, 15220), (10160, 12937), (10795, 12176)]