20999048

素因数分解:

$2^3\times 7^2\times {\mathrm{53569}}^1$

素因数の和:53589

約数の個数: 24

約数和(自身を含む): 45802350

約数和(自身を除く): 24803302

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 53569, 107138, 214276, 374983, 428552, 749966, 1499932, 2624881, 2999864, 5249762, 10499524, 20999048]

約数ペア:

[(1, 20999048), (2, 10499524), (4, 5249762), (7, 2999864), (8, 2624881), (14, 1499932), (28, 749966), (49, 428552), (56, 374983), (98, 214276), (196, 107138), (392, 53569)]