18894057

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{9887}}^1$

素因数の和:9917

約数の個数: 24

約数和(自身を含む): 31562496

約数和(自身を除く): 12668439

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 9887, 29661, 69209, 128531, 207627, 385593, 484463, 899717, 1453389, 2699151, 6298019, 18894057]

約数ペア:

[(1, 18894057), (3, 6298019), (7, 2699151), (13, 1453389), (21, 899717), (39, 484463), (49, 385593), (91, 207627), (147, 128531), (273, 69209), (637, 29661), (1911, 9887)]