28781571

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{15061}}^1$

素因数の和:15091

約数の個数: 24

約数和(自身を含む): 48077904

約数和(自身を除く): 19296333

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 15061, 45183, 105427, 195793, 316281, 587379, 737989, 1370551, 2213967, 4111653, 9593857, 28781571]

約数ペア:

[(1, 28781571), (3, 9593857), (7, 4111653), (13, 2213967), (21, 1370551), (39, 737989), (49, 587379), (91, 316281), (147, 195793), (273, 105427), (637, 45183), (1911, 15061)]