21553144

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{439}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 45262800

約数和(自身を除く): 23709656

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 361, 439, 646, 722, 878, 1292, 1444, 1756, 2584, 2888, 3512, 6137, 7463, 8341, 12274, 14926, 16682, 24548, 29852, 33364, 49096, 59704, 66728, 141797, 158479, 283594, 316958, 567188, 633916, 1134376, 1267832, 2694143, 5388286, 10776572, 21553144]

約数ペア:

[(1, 21553144), (2, 10776572), (4, 5388286), (8, 2694143), (17, 1267832), (19, 1134376), (34, 633916), (38, 567188), (68, 316958), (76, 283594), (136, 158479), (152, 141797), (323, 66728), (361, 59704), (439, 49096), (646, 33364), (722, 29852), (878, 24548), (1292, 16682), (1444, 14926), (1756, 12274), (2584, 8341), (2888, 7463), (3512, 6137)]