20561085

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{233}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 37453104

約数和(自身を除く): 16892019

約数列:

[1, 3, 5, 9, 15, 37, 45, 53, 111, 159, 185, 233, 265, 333, 477, 555, 699, 795, 1165, 1665, 1961, 2097, 2385, 3495, 5883, 8621, 9805, 10485, 12349, 17649, 25863, 29415, 37047, 43105, 61745, 77589, 88245, 111141, 129315, 185235, 387945, 456913, 555705, 1370739, 2284565, 4112217, 6853695, 20561085]

約数ペア:

[(1, 20561085), (3, 6853695), (5, 4112217), (9, 2284565), (15, 1370739), (37, 555705), (45, 456913), (53, 387945), (111, 185235), (159, 129315), (185, 111141), (233, 88245), (265, 77589), (333, 61745), (477, 43105), (555, 37047), (699, 29415), (795, 25863), (1165, 17649), (1665, 12349), (1961, 10485), (2097, 9805), (2385, 8621), (3495, 5883)]