21501955

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1\times {\mathrm{229}}^1$

素因数の和:534

約数の個数: 16

約数和(自身を含む): 26330400

約数和(自身を除く): 4828445

約数列:

[1, 5, 89, 211, 229, 445, 1055, 1145, 18779, 20381, 48319, 93895, 101905, 241595, 4300391, 21501955]

約数ペア:

[(1, 21501955), (5, 4300391), (89, 241595), (211, 101905), (229, 93895), (445, 48319), (1055, 20381), (1145, 18779)]