21802795

素因数分解:

$5^1\times 7^3\times {\mathrm{12713}}^1$

素因数の和:12739

約数の個数: 16

約数和(自身を含む): 30513600

約数和(自身を除く): 8710805

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 12713, 63565, 88991, 444955, 622937, 3114685, 4360559, 21802795]

約数ペア:

[(1, 21802795), (5, 4360559), (7, 3114685), (35, 622937), (49, 444955), (245, 88991), (343, 63565), (1715, 12713)]