21055788

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^1\times {\mathrm{4999}}^1$

素因数の和:5028

約数の個数: 60

約数和(自身を含む): 59290000

約数和(自身を除く): 38234212

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 81, 108, 117, 156, 162, 234, 324, 351, 468, 702, 1053, 1404, 2106, 4212, 4999, 9998, 14997, 19996, 29994, 44991, 59988, 64987, 89982, 129974, 134973, 179964, 194961, 259948, 269946, 389922, 404919, 539892, 584883, 779844, 809838, 1169766, 1619676, 1754649, 2339532, 3509298, 5263947, 7018596, 10527894, 21055788]

約数ペア:

[(1, 21055788), (2, 10527894), (3, 7018596), (4, 5263947), (6, 3509298), (9, 2339532), (12, 1754649), (13, 1619676), (18, 1169766), (26, 809838), (27, 779844), (36, 584883), (39, 539892), (52, 404919), (54, 389922), (78, 269946), (81, 259948), (108, 194961), (117, 179964), (156, 134973), (162, 129974), (234, 89982), (324, 64987), (351, 59988), (468, 44991), (702, 29994), (1053, 19996), (1404, 14997), (2106, 9998), (4212, 4999)]