18877755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{739}}^1$

素因数の和:891

約数の個数: 32

約数和(自身を含む): 32820480

約数和(自身を除く): 13942725

約数列:

[1, 3, 5, 13, 15, 39, 65, 131, 195, 393, 655, 739, 1703, 1965, 2217, 3695, 5109, 8515, 9607, 11085, 25545, 28821, 48035, 96809, 144105, 290427, 484045, 1258517, 1452135, 3775551, 6292585, 18877755]

約数ペア:

[(1, 18877755), (3, 6292585), (5, 3775551), (13, 1452135), (15, 1258517), (39, 484045), (65, 290427), (131, 144105), (195, 96809), (393, 48035), (655, 28821), (739, 25545), (1703, 11085), (1965, 9607), (2217, 8515), (3695, 5109)]