2019944840

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{78781}}^1$

素因数の和:79433

約数の個数: 32

約数和(自身を含む): 4552023960

約数和(自身を除く): 2532079120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 3205, 5128, 6410, 12820, 25640, 78781, 157562, 315124, 393905, 630248, 787810, 1575620, 3151240, 50498621, 100997242, 201994484, 252493105, 403988968, 504986210, 1009972420, 2019944840]

約数ペア:

[(1, 2019944840), (2, 1009972420), (4, 504986210), (5, 403988968), (8, 252493105), (10, 201994484), (20, 100997242), (40, 50498621), (641, 3151240), (1282, 1575620), (2564, 787810), (3205, 630248), (5128, 393905), (6410, 315124), (12820, 157562), (25640, 78781)]