21890458359

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{957211}}^1$

素因数の和:957249

約数の個数: 48

約数和(自身を含む): 40738942720

約数和(自身を除く): 18848484361

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 121, 189, 231, 297, 363, 693, 847, 1089, 2079, 2541, 3267, 7623, 22869, 957211, 2871633, 6700477, 8614899, 10529321, 20101431, 25844697, 31587963, 60304293, 73705247, 94763889, 115822531, 180912879, 221115741, 284291667, 347467593, 663347223, 810757717, 1042402779, 1990041669, 2432273151, 3127208337, 7296819453, 21890458359]

約数ペア:

[(1, 21890458359), (3, 7296819453), (7, 3127208337), (9, 2432273151), (11, 1990041669), (21, 1042402779), (27, 810757717), (33, 663347223), (63, 347467593), (77, 284291667), (99, 221115741), (121, 180912879), (189, 115822531), (231, 94763889), (297, 73705247), (363, 60304293), (693, 31587963), (847, 25844697), (1089, 20101431), (2079, 10529321), (2541, 8614899), (3267, 6700477), (7623, 2871633), (22869, 957211)]