21000317750

素因数分解:

$2^1\times 5^3\times {\mathrm{84001271}}^1$

素因数の和:84001288

約数の個数: 16

約数和(自身を含む): 39312595296

約数和(自身を除く): 18312277546

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 84001271, 168002542, 420006355, 840012710, 2100031775, 4200063550, 10500158875, 21000317750]

約数ペア:

[(1, 21000317750), (2, 10500158875), (5, 4200063550), (10, 2100031775), (25, 840012710), (50, 420006355), (125, 168002542), (250, 84001271)]