20123681990

素因数分解:

$2^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{10215067}}^1$

素因数の和:10215271

約数の個数: 16

約数和(自身を含む): 36406502352

約数和(自身を除く): 16282820362

約数列:

[1, 2, 5, 10, 197, 394, 985, 1970, 10215067, 20430134, 51075335, 102150670, 2012368199, 4024736398, 10061840995, 20123681990]

約数ペア:

[(1, 20123681990), (2, 10061840995), (5, 4024736398), (10, 2012368199), (197, 102150670), (394, 51075335), (985, 20430134), (1970, 10215067)]