28669860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:218

約数の個数: 144

約数和(自身を含む): 93562560

約数和(自身を除く): 64892700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 83, 90, 95, 101, 114, 166, 171, 180, 190, 202, 228, 249, 285, 303, 332, 342, 380, 404, 415, 498, 505, 570, 606, 684, 747, 830, 855, 909, 996, 1010, 1140, 1212, 1245, 1494, 1515, 1577, 1660, 1710, 1818, 1919, 2020, 2490, 2988, 3030, 3154, 3420, 3636, 3735, 3838, 4545, 4731, 4980, 5757, 6060, 6308, 7470, 7676, 7885, 8383, 9090, 9462, 9595, 11514, 14193, 14940, 15770, 16766, 17271, 18180, 18924, 19190, 23028, 23655, 25149, 28386, 28785, 31540, 33532, 34542, 38380, 41915, 47310, 50298, 56772, 57570, 69084, 70965, 75447, 83830, 86355, 94620, 100596, 115140, 125745, 141930, 150894, 159277, 167660, 172710, 251490, 283860, 301788, 318554, 345420, 377235, 477831, 502980, 637108, 754470, 796385, 955662, 1433493, 1508940, 1592770, 1911324, 2389155, 2866986, 3185540, 4778310, 5733972, 7167465, 9556620, 14334930, 28669860]

約数ペア:

[(1, 28669860), (2, 14334930), (3, 9556620), (4, 7167465), (5, 5733972), (6, 4778310), (9, 3185540), (10, 2866986), (12, 2389155), (15, 1911324), (18, 1592770), (19, 1508940), (20, 1433493), (30, 955662), (36, 796385), (38, 754470), (45, 637108), (57, 502980), (60, 477831), (76, 377235), (83, 345420), (90, 318554), (95, 301788), (101, 283860), (114, 251490), (166, 172710), (171, 167660), (180, 159277), (190, 150894), (202, 141930), (228, 125745), (249, 115140), (285, 100596), (303, 94620), (332, 86355), (342, 83830), (380, 75447), (404, 70965), (415, 69084), (498, 57570), (505, 56772), (570, 50298), (606, 47310), (684, 41915), (747, 38380), (830, 34542), (855, 33532), (909, 31540), (996, 28785), (1010, 28386), (1140, 25149), (1212, 23655), (1245, 23028), (1494, 19190), (1515, 18924), (1577, 18180), (1660, 17271), (1710, 16766), (1818, 15770), (1919, 14940), (2020, 14193), (2490, 11514), (2988, 9595), (3030, 9462), (3154, 9090), (3420, 8383), (3636, 7885), (3735, 7676), (3838, 7470), (4545, 6308), (4731, 6060), (4980, 5757)]