21342605

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{829}}^1$

素因数の和:1124

約数の個数: 16

約数和(自身を含む): 27091200

約数和(自身を除く): 5748595

約数列:

[1, 5, 19, 95, 271, 829, 1355, 4145, 5149, 15751, 25745, 78755, 224659, 1123295, 4268521, 21342605]

約数ペア:

[(1, 21342605), (5, 4268521), (19, 1123295), (95, 224659), (271, 78755), (829, 25745), (1355, 15751), (4145, 5149)]