18699915

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5641}}^1$

素因数の和:5679

約数の個数: 32

約数和(自身を含む): 34122816

約数和(自身を除く): 15422901

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 5641, 16923, 28205, 73333, 84615, 95897, 219999, 287691, 366665, 479485, 1099995, 1246661, 1438455, 3739983, 6233305, 18699915]

約数ペア:

[(1, 18699915), (3, 6233305), (5, 3739983), (13, 1438455), (15, 1246661), (17, 1099995), (39, 479485), (51, 366665), (65, 287691), (85, 219999), (195, 95897), (221, 84615), (255, 73333), (663, 28205), (1105, 16923), (3315, 5641)]