21687104

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:703

約数の個数: 56

約数和(自身を含む): 47109888

約数和(自身を除く): 25422784

約数列:

[1, 2, 4, 8, 16, 17, 31, 32, 34, 62, 64, 68, 124, 136, 248, 272, 496, 527, 544, 643, 992, 1054, 1088, 1286, 1984, 2108, 2572, 4216, 5144, 8432, 10288, 10931, 16864, 19933, 20576, 21862, 33728, 39866, 41152, 43724, 79732, 87448, 159464, 174896, 318928, 338861, 349792, 637856, 677722, 699584, 1275712, 1355444, 2710888, 5421776, 10843552, 21687104]

約数ペア:

[(1, 21687104), (2, 10843552), (4, 5421776), (8, 2710888), (16, 1355444), (17, 1275712), (31, 699584), (32, 677722), (34, 637856), (62, 349792), (64, 338861), (68, 318928), (124, 174896), (136, 159464), (248, 87448), (272, 79732), (496, 43724), (527, 41152), (544, 39866), (643, 33728), (992, 21862), (1054, 20576), (1088, 19933), (1286, 16864), (1984, 10931), (2108, 10288), (2572, 8432), (4216, 5144)]