21118857

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{317}}^1\times {\mathrm{419}}^1$

素因数の和:792

約数の個数: 16

約数和(自身を含む): 28848960

約数和(自身を除く): 7730103

約数列:

[1, 3, 53, 159, 317, 419, 951, 1257, 16801, 22207, 50403, 66621, 132823, 398469, 7039619, 21118857]

約数ペア:

[(1, 21118857), (3, 7039619), (53, 398469), (159, 132823), (317, 66621), (419, 50403), (951, 22207), (1257, 16801)]