21000751880

素因数分解:

$2^3\times 5^1\times {\mathrm{525018797}}^1$

素因数の和:525018808

約数の個数: 16

約数和(自身を含む): 47251691820

約数和(自身を除く): 26250939940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 525018797, 1050037594, 2100075188, 2625093985, 4200150376, 5250187970, 10500375940, 21000751880]

約数ペア:

[(1, 21000751880), (2, 10500375940), (4, 5250187970), (5, 4200150376), (8, 2625093985), (10, 2100075188), (20, 1050037594), (40, 525018797)]