20180877475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{449}}^1\times {\mathrm{1193}}^1$

素因数の和:1800

約数の個数: 48

約数和(自身を含む): 27582832800

約数和(自身を除く): 7401955325

約数列:

[1, 5, 11, 25, 55, 137, 275, 449, 685, 1193, 1507, 2245, 3425, 4939, 5965, 7535, 11225, 13123, 24695, 29825, 37675, 61513, 65615, 123475, 163441, 307565, 328075, 535657, 676643, 817205, 1537825, 1797851, 2678285, 3383215, 4086025, 5892227, 8989255, 13391425, 16916075, 29461135, 44946275, 73385009, 147305675, 366925045, 807235099, 1834625225, 4036175495, 20180877475]

約数ペア:

[(1, 20180877475), (5, 4036175495), (11, 1834625225), (25, 807235099), (55, 366925045), (137, 147305675), (275, 73385009), (449, 44946275), (685, 29461135), (1193, 16916075), (1507, 13391425), (2245, 8989255), (3425, 5892227), (4939, 4086025), (5965, 3383215), (7535, 2678285), (11225, 1797851), (13123, 1537825), (24695, 817205), (29825, 676643), (37675, 535657), (61513, 328075), (65615, 307565), (123475, 163441)]