21056955

素因数分解:

$3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{15773}}^1$

素因数の和:15870

約数の個数: 16

約数和(自身を含む): 34071840

約数和(自身を除く): 13014885

約数列:

[1, 3, 5, 15, 89, 267, 445, 1335, 15773, 47319, 78865, 236595, 1403797, 4211391, 7018985, 21056955]

約数ペア:

[(1, 21056955), (3, 7018985), (5, 4211391), (15, 1403797), (89, 236595), (267, 78865), (445, 47319), (1335, 15773)]