21745281

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{3541}}^1$

素因数の和:3656

約数の個数: 16

約数和(自身を含む): 30602880

約数和(自身を除く): 8857599

約数列:

[1, 3, 23, 69, 89, 267, 2047, 3541, 6141, 10623, 81443, 244329, 315149, 945447, 7248427, 21745281]

約数ペア:

[(1, 21745281), (3, 7248427), (23, 945447), (69, 315149), (89, 244329), (267, 81443), (2047, 10623), (3541, 6141)]