20156809

素因数分解:

${\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:384

約数の個数: 16

約数和(自身を含む): 21859200

約数和(自身を除く): 1702391

約数列:

[1, 23, 43, 89, 229, 989, 2047, 3827, 5267, 9847, 20381, 88021, 226481, 468763, 876383, 20156809]

約数ペア:

[(1, 20156809), (23, 876383), (43, 468763), (89, 226481), (229, 88021), (989, 20381), (2047, 9847), (3827, 5267)]