21047364

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:311

約数の個数: 120

約数和(自身を含む): 62610240

約数和(自身を除く): 41562876

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 27, 36, 38, 39, 52, 54, 57, 76, 78, 81, 108, 114, 117, 156, 162, 171, 228, 234, 247, 263, 324, 342, 351, 468, 494, 513, 526, 684, 702, 741, 789, 988, 1026, 1052, 1053, 1404, 1482, 1539, 1578, 2052, 2106, 2223, 2367, 2964, 3078, 3156, 3419, 4212, 4446, 4734, 4997, 6156, 6669, 6838, 7101, 8892, 9468, 9994, 10257, 13338, 13676, 14202, 14991, 19988, 20007, 20514, 21303, 26676, 28404, 29982, 30771, 40014, 41028, 42606, 44973, 59964, 61542, 64961, 80028, 85212, 89946, 92313, 123084, 129922, 134919, 179892, 184626, 194883, 259844, 269838, 276939, 369252, 389766, 404757, 539676, 553878, 584649, 779532, 809514, 1107756, 1169298, 1619028, 1753947, 2338596, 3507894, 5261841, 7015788, 10523682, 21047364]

約数ペア:

[(1, 21047364), (2, 10523682), (3, 7015788), (4, 5261841), (6, 3507894), (9, 2338596), (12, 1753947), (13, 1619028), (18, 1169298), (19, 1107756), (26, 809514), (27, 779532), (36, 584649), (38, 553878), (39, 539676), (52, 404757), (54, 389766), (57, 369252), (76, 276939), (78, 269838), (81, 259844), (108, 194883), (114, 184626), (117, 179892), (156, 134919), (162, 129922), (171, 123084), (228, 92313), (234, 89946), (247, 85212), (263, 80028), (324, 64961), (342, 61542), (351, 59964), (468, 44973), (494, 42606), (513, 41028), (526, 40014), (684, 30771), (702, 29982), (741, 28404), (789, 26676), (988, 21303), (1026, 20514), (1052, 20007), (1053, 19988), (1404, 14991), (1482, 14202), (1539, 13676), (1578, 13338), (2052, 10257), (2106, 9994), (2223, 9468), (2367, 8892), (2964, 7101), (3078, 6838), (3156, 6669), (3419, 6156), (4212, 4997), (4446, 4734)]