18918683120

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{277889}}^1$

素因数の和:277962

約数の個数: 80

約数和(自身を含む): 47139036480

約数和(自身を除く): 28220353360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 37, 40, 46, 74, 80, 92, 115, 148, 184, 185, 230, 296, 368, 370, 460, 592, 740, 851, 920, 1480, 1702, 1840, 2960, 3404, 4255, 6808, 8510, 13616, 17020, 34040, 68080, 277889, 555778, 1111556, 1389445, 2223112, 2778890, 4446224, 5557780, 6391447, 10281893, 11115560, 12782894, 20563786, 22231120, 25565788, 31957235, 41127572, 51131576, 51409465, 63914470, 82255144, 102263152, 102818930, 127828940, 164510288, 205637860, 236483539, 255657880, 411275720, 472967078, 511315760, 822551440, 945934156, 1182417695, 1891868312, 2364835390, 3783736624, 4729670780, 9459341560, 18918683120]

約数ペア:

[(1, 18918683120), (2, 9459341560), (4, 4729670780), (5, 3783736624), (8, 2364835390), (10, 1891868312), (16, 1182417695), (20, 945934156), (23, 822551440), (37, 511315760), (40, 472967078), (46, 411275720), (74, 255657880), (80, 236483539), (92, 205637860), (115, 164510288), (148, 127828940), (184, 102818930), (185, 102263152), (230, 82255144), (296, 63914470), (368, 51409465), (370, 51131576), (460, 41127572), (592, 31957235), (740, 25565788), (851, 22231120), (920, 20563786), (1480, 12782894), (1702, 11115560), (1840, 10281893), (2960, 6391447), (3404, 5557780), (4255, 4446224), (6808, 2778890), (8510, 2223112), (13616, 1389445), (17020, 1111556), (34040, 555778), (68080, 277889)]