17780684

素因数分解:

$2^2\times {\mathrm{103}}^2\times {\mathrm{419}}^1$

素因数の和:629

約数の個数: 18

約数和(自身を含む): 31496220

約数和(自身を除く): 13715536

約数列:

[1, 2, 4, 103, 206, 412, 419, 838, 1676, 10609, 21218, 42436, 43157, 86314, 172628, 4445171, 8890342, 17780684]

約数ペア:

[(1, 17780684), (2, 8890342), (4, 4445171), (103, 172628), (206, 86314), (412, 43157), (419, 42436), (838, 21218), (1676, 10609)]