20519570

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{28109}}^1$

素因数の和:28189

約数の個数: 16

約数和(自身を含む): 37442520

約数和(自身を除く): 16922950

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 28109, 56218, 140545, 281090, 2051957, 4103914, 10259785, 20519570]

約数ペア:

[(1, 20519570), (2, 10259785), (5, 4103914), (10, 2051957), (73, 281090), (146, 140545), (365, 56218), (730, 28109)]