21031665985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{3727}}^1$

素因数の和:3886

約数の個数: 64

約数和(自身を含む): 29375447040

約数和(自身を除く): 8343781055

約数列:

[1, 5, 11, 37, 47, 55, 59, 185, 235, 295, 407, 517, 649, 1739, 2035, 2183, 2585, 2773, 3245, 3727, 8695, 10915, 13865, 18635, 19129, 24013, 30503, 40997, 95645, 102601, 120065, 137899, 152515, 175169, 204985, 219893, 513005, 689495, 875845, 1099465, 1128611, 1516889, 1926859, 2418823, 5643055, 6481253, 7584445, 8136041, 9634295, 10334971, 12094115, 32406265, 40680205, 51674855, 71293783, 89496451, 113684681, 356468915, 382393927, 447482255, 568423405, 1911969635, 4206333197, 21031665985]

約数ペア:

[(1, 21031665985), (5, 4206333197), (11, 1911969635), (37, 568423405), (47, 447482255), (55, 382393927), (59, 356468915), (185, 113684681), (235, 89496451), (295, 71293783), (407, 51674855), (517, 40680205), (649, 32406265), (1739, 12094115), (2035, 10334971), (2183, 9634295), (2585, 8136041), (2773, 7584445), (3245, 6481253), (3727, 5643055), (8695, 2418823), (10915, 1926859), (13865, 1516889), (18635, 1128611), (19129, 1099465), (24013, 875845), (30503, 689495), (40997, 513005), (95645, 219893), (102601, 204985), (120065, 175169), (137899, 152515)]