20749910

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{90217}}^1$

素因数の和:90247

約数の個数: 16

約数和(自身を含む): 38974176

約数和(自身を除く): 18224266

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 90217, 180434, 451085, 902170, 2074991, 4149982, 10374955, 20749910]

約数ペア:

[(1, 20749910), (2, 10374955), (5, 4149982), (10, 2074991), (23, 902170), (46, 451085), (115, 180434), (230, 90217)]