21451364

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:137

約数の個数: 72

約数和(自身を含む): 45045504

約数和(自身を除く): 23594140

約数列:

[1, 2, 4, 11, 22, 23, 41, 44, 46, 47, 82, 92, 94, 121, 164, 188, 242, 253, 451, 484, 506, 517, 902, 943, 1012, 1034, 1081, 1804, 1886, 1927, 2068, 2162, 2783, 3772, 3854, 4324, 4961, 5566, 5687, 7708, 9922, 10373, 11132, 11374, 11891, 19844, 20746, 21197, 22748, 23782, 41492, 42394, 44321, 47564, 84788, 88642, 114103, 130801, 177284, 228206, 233167, 261602, 456412, 466334, 487531, 523204, 932668, 975062, 1950124, 5362841, 10725682, 21451364]

約数ペア:

[(1, 21451364), (2, 10725682), (4, 5362841), (11, 1950124), (22, 975062), (23, 932668), (41, 523204), (44, 487531), (46, 466334), (47, 456412), (82, 261602), (92, 233167), (94, 228206), (121, 177284), (164, 130801), (188, 114103), (242, 88642), (253, 84788), (451, 47564), (484, 44321), (506, 42394), (517, 41492), (902, 23782), (943, 22748), (1012, 21197), (1034, 20746), (1081, 19844), (1804, 11891), (1886, 11374), (1927, 11132), (2068, 10373), (2162, 9922), (2783, 7708), (3772, 5687), (3854, 5566), (4324, 4961)]