21120656

素因数分解:

$2^4\times {\mathrm{271}}^1\times {\mathrm{4871}}^1$

素因数の和:5150

約数の個数: 20

約数和(自身を含む): 41080704

約数和(自身を除く): 19960048

約数列:

[1, 2, 4, 8, 16, 271, 542, 1084, 2168, 4336, 4871, 9742, 19484, 38968, 77936, 1320041, 2640082, 5280164, 10560328, 21120656]

約数ペア:

[(1, 21120656), (2, 10560328), (4, 5280164), (8, 2640082), (16, 1320041), (271, 77936), (542, 38968), (1084, 19484), (2168, 9742), (4336, 4871)]