21126008

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{43291}}^1$

素因数の和:43358

約数の個数: 16

約数和(自身を含む): 40261560

約数和(自身を除く): 19135552

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 43291, 86582, 173164, 346328, 2640751, 5281502, 10563004, 21126008]

約数ペア:

[(1, 21126008), (2, 10563004), (4, 5281502), (8, 2640751), (61, 346328), (122, 173164), (244, 86582), (488, 43291)]