20865625385

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{521}}^1\times {\mathrm{1249}}^1$

素因数の和:1850

約数の個数: 48

約数和(自身を含む): 28117530000

約数和(自身を除く): 7251904615

約数列:

[1, 5, 11, 53, 55, 121, 265, 521, 583, 605, 1249, 2605, 2915, 5731, 6245, 6413, 13739, 27613, 28655, 32065, 63041, 66197, 68695, 138065, 151129, 303743, 315205, 330985, 650729, 728167, 755645, 1518715, 3253645, 3341173, 3640835, 7158019, 8009837, 16705865, 34488637, 35790095, 40049185, 78738209, 172443185, 379375007, 393691045, 1896875035, 4173125077, 20865625385]

約数ペア:

[(1, 20865625385), (5, 4173125077), (11, 1896875035), (53, 393691045), (55, 379375007), (121, 172443185), (265, 78738209), (521, 40049185), (583, 35790095), (605, 34488637), (1249, 16705865), (2605, 8009837), (2915, 7158019), (5731, 3640835), (6245, 3341173), (6413, 3253645), (13739, 1518715), (27613, 755645), (28655, 728167), (32065, 650729), (63041, 330985), (66197, 315205), (68695, 303743), (138065, 151129)]