2178256

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{1249}}^1$

素因数の和:1366

約数の個数: 20

約数和(自身を含む): 4262500

約数和(自身を除く): 2084244

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1249, 1744, 2498, 4996, 9992, 19984, 136141, 272282, 544564, 1089128, 2178256]

約数ペア:

[(1, 2178256), (2, 1089128), (4, 544564), (8, 272282), (16, 136141), (109, 19984), (218, 9992), (436, 4996), (872, 2498), (1249, 1744)]