20971395

素因数分解:

$3^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2053}}^1$

素因数の和:2291

約数の個数: 24

約数和(自身を含む): 36528336

約数和(自身を除く): 15556941

約数列:

[1, 3, 5, 9, 15, 45, 227, 681, 1135, 2043, 2053, 3405, 6159, 10215, 10265, 18477, 30795, 92385, 466031, 1398093, 2330155, 4194279, 6990465, 20971395]

約数ペア:

[(1, 20971395), (3, 6990465), (5, 4194279), (9, 2330155), (15, 1398093), (45, 466031), (227, 92385), (681, 30795), (1135, 18477), (2043, 10265), (2053, 10215), (3405, 6159)]