85784420

素因数分解:

$2^2\times 5^1\times {\mathrm{1021}}^1\times {\mathrm{4201}}^1$

素因数の和:5231

約数の個数: 24

約数和(自身を含む): 180366648

約数和(自身を除く): 94582228

約数列:

[1, 2, 4, 5, 10, 20, 1021, 2042, 4084, 4201, 5105, 8402, 10210, 16804, 20420, 21005, 42010, 84020, 4289221, 8578442, 17156884, 21446105, 42892210, 85784420]

約数ペア:

[(1, 85784420), (2, 42892210), (4, 21446105), (5, 17156884), (10, 8578442), (20, 4289221), (1021, 84020), (2042, 42010), (4084, 21005), (4201, 20420), (5105, 16804), (8402, 10210)]