20972090

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{91183}}^1$

素因数の和:91213

約数の個数: 16

約数和(自身を含む): 39391488

約数和(自身を除く): 18419398

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 91183, 182366, 455915, 911830, 2097209, 4194418, 10486045, 20972090]

約数ペア:

[(1, 20972090), (2, 10486045), (5, 4194418), (10, 2097209), (23, 911830), (46, 455915), (115, 182366), (230, 91183)]