21434405

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1\times {\mathrm{643}}^1$

素因数の和:820

約数の個数: 16

約数和(自身を含む): 26429760

約数和(自身を除く): 4995355

約数列:

[1, 5, 59, 113, 295, 565, 643, 3215, 6667, 33335, 37937, 72659, 189685, 363295, 4286881, 21434405]

約数ペア:

[(1, 21434405), (5, 4286881), (59, 363295), (113, 189685), (295, 72659), (565, 37937), (643, 33335), (3215, 6667)]