20199365990

素因数分解:

$2^1\times 5^1\times {\mathrm{25309}}^1\times {\mathrm{79811}}^1$

素因数の和:105127

約数の個数: 16

約数和(自身を含む): 36360750960

約数和(自身を除く): 16161384970

約数列:

[1, 2, 5, 10, 25309, 50618, 79811, 126545, 159622, 253090, 399055, 798110, 2019936599, 4039873198, 10099682995, 20199365990]

約数ペア:

[(1, 20199365990), (2, 10099682995), (5, 4039873198), (10, 2019936599), (25309, 798110), (50618, 399055), (79811, 253090), (126545, 159622)]