21000427880

素因数分解:

$2^3\times 5^1\times {\mathrm{525010697}}^1$

素因数の和:525010708

約数の個数: 16

約数和(自身を含む): 47250962820

約数和(自身を除く): 26250534940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 525010697, 1050021394, 2100042788, 2625053485, 4200085576, 5250106970, 10500213940, 21000427880]

約数ペア:

[(1, 21000427880), (2, 10500213940), (4, 5250106970), (5, 4200085576), (8, 2625053485), (10, 2100042788), (20, 1050021394), (40, 525010697)]