21250988

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{23}}^2\times {\mathrm{83}}^1$

素因数の和:155

約数の個数: 54

約数和(自身を含む): 43246812

約数和(自身を除く): 21995824

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 83, 92, 121, 166, 242, 253, 332, 484, 506, 529, 913, 1012, 1058, 1826, 1909, 2116, 2783, 3652, 3818, 5566, 5819, 7636, 10043, 11132, 11638, 20086, 20999, 23276, 40172, 41998, 43907, 64009, 83996, 87814, 128018, 175628, 230989, 256036, 461978, 482977, 923956, 965954, 1931908, 5312747, 10625494, 21250988]

約数ペア:

[(1, 21250988), (2, 10625494), (4, 5312747), (11, 1931908), (22, 965954), (23, 923956), (44, 482977), (46, 461978), (83, 256036), (92, 230989), (121, 175628), (166, 128018), (242, 87814), (253, 83996), (332, 64009), (484, 43907), (506, 41998), (529, 40172), (913, 23276), (1012, 20999), (1058, 20086), (1826, 11638), (1909, 11132), (2116, 10043), (2783, 7636), (3652, 5819), (3818, 5566)]