21432016

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12289}}^1$

素因数の和:12406

約数の個数: 20

約数和(自身を含む): 41908900

約数和(自身を除く): 20476884

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12289, 24578, 49156, 98312, 196624, 1339501, 2679002, 5358004, 10716008, 21432016]

約数ペア:

[(1, 21432016), (2, 10716008), (4, 5358004), (8, 2679002), (16, 1339501), (109, 196624), (218, 98312), (436, 49156), (872, 24578), (1744, 12289)]