19998730

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{86951}}^1$

素因数の和:86981

約数の個数: 16

約数和(自身を含む): 37563264

約数和(自身を除く): 17564534

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 86951, 173902, 434755, 869510, 1999873, 3999746, 9999365, 19998730]

約数ペア:

[(1, 19998730), (2, 9999365), (5, 3999746), (10, 1999873), (23, 869510), (46, 434755), (115, 173902), (230, 86951)]