21704875

素因数分解:

$5^3\times {\mathrm{89}}^1\times {\mathrm{1951}}^1$

素因数の和:2055

約数の個数: 16

約数和(自身を含む): 27406080

約数和(自身を除く): 5701205

約数列:

[1, 5, 25, 89, 125, 445, 1951, 2225, 9755, 11125, 48775, 173639, 243875, 868195, 4340975, 21704875]

約数ペア:

[(1, 21704875), (5, 4340975), (25, 868195), (89, 243875), (125, 173639), (445, 48775), (1951, 11125), (2225, 9755)]