20157890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{87643}}^1$

素因数の和:87673

約数の個数: 16

約数和(自身を含む): 37862208

約数和(自身を除く): 17704318

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 87643, 175286, 438215, 876430, 2015789, 4031578, 10078945, 20157890]

約数ペア:

[(1, 20157890), (2, 10078945), (5, 4031578), (10, 2015789), (23, 876430), (46, 438215), (115, 175286), (230, 87643)]