20277880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72421}}^1$

素因数の和:72439

約数の個数: 32

約数和(自身を含む): 52143840

約数和(自身を除く): 31865960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72421, 144842, 289684, 362105, 506947, 579368, 724210, 1013894, 1448420, 2027788, 2534735, 2896840, 4055576, 5069470, 10138940, 20277880]

約数ペア:

[(1, 20277880), (2, 10138940), (4, 5069470), (5, 4055576), (7, 2896840), (8, 2534735), (10, 2027788), (14, 1448420), (20, 1013894), (28, 724210), (35, 579368), (40, 506947), (56, 362105), (70, 289684), (140, 144842), (280, 72421)]