18778761

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{883}}^1$

素因数の和:1045

約数の個数: 24

約数和(自身を含む): 28959840

約数和(自身を除く): 10181079

約数列:

[1, 3, 9, 17, 51, 139, 153, 417, 883, 1251, 2363, 2649, 7089, 7947, 15011, 21267, 45033, 122737, 135099, 368211, 1104633, 2086529, 6259587, 18778761]

約数ペア:

[(1, 18778761), (3, 6259587), (9, 2086529), (17, 1104633), (51, 368211), (139, 135099), (153, 122737), (417, 45033), (883, 21267), (1251, 15011), (2363, 7947), (2649, 7089)]