520018640

素因数分解:

$2^4\times 5^1\times {\mathrm{6500233}}^1$

素因数の和:6500246

約数の個数: 20

約数和(自身を含む): 1209043524

約数和(自身を除く): 689024884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6500233, 13000466, 26000932, 32501165, 52001864, 65002330, 104003728, 130004660, 260009320, 520018640]

約数ペア:

[(1, 520018640), (2, 260009320), (4, 130004660), (5, 104003728), (8, 65002330), (10, 52001864), (16, 32501165), (20, 26000932), (40, 13000466), (80, 6500233)]