21000427892

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{2879}}^1\times {\mathrm{42409}}^1$

素因数の和:45335

約数の個数: 24

約数和(自身を含む): 37619366400

約数和(自身を除く): 16618938508

約数列:

[1, 2, 4, 43, 86, 172, 2879, 5758, 11516, 42409, 84818, 123797, 169636, 247594, 495188, 1823587, 3647174, 7294348, 122095511, 244191022, 488382044, 5250106973, 10500213946, 21000427892]

約数ペア:

[(1, 21000427892), (2, 10500213946), (4, 5250106973), (43, 488382044), (86, 244191022), (172, 122095511), (2879, 7294348), (5758, 3647174), (11516, 1823587), (42409, 495188), (84818, 247594), (123797, 169636)]