20381426

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{4993}}^1$

素因数の和:5165

約数の個数: 16

約数和(自身を含む): 33140184

約数和(自身を除く): 12758758

約数列:

[1, 2, 13, 26, 157, 314, 2041, 4082, 4993, 9986, 64909, 129818, 783901, 1567802, 10190713, 20381426]

約数ペア:

[(1, 20381426), (2, 10190713), (13, 1567802), (26, 783901), (157, 129818), (314, 64909), (2041, 9986), (4082, 4993)]