21871188

素因数分解:

$2^2\times 3^3\times {\mathrm{313}}^1\times {\mathrm{647}}^1$

素因数の和:973

約数の個数: 48

約数和(自身を含む): 56972160

約数和(自身を除く): 35100972

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 313, 626, 647, 939, 1252, 1294, 1878, 1941, 2588, 2817, 3756, 3882, 5634, 5823, 7764, 8451, 11268, 11646, 16902, 17469, 23292, 33804, 34938, 69876, 202511, 405022, 607533, 810044, 1215066, 1822599, 2430132, 3645198, 5467797, 7290396, 10935594, 21871188]

約数ペア:

[(1, 21871188), (2, 10935594), (3, 7290396), (4, 5467797), (6, 3645198), (9, 2430132), (12, 1822599), (18, 1215066), (27, 810044), (36, 607533), (54, 405022), (108, 202511), (313, 69876), (626, 34938), (647, 33804), (939, 23292), (1252, 17469), (1294, 16902), (1878, 11646), (1941, 11268), (2588, 8451), (2817, 7764), (3756, 5823), (3882, 5634)]