28777005

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{12539}}^1$

素因数の和:12570

約数の個数: 32

約数和(自身を含む): 54172800

約数和(自身を除く): 25395795

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 12539, 37617, 62695, 112851, 188085, 213163, 338553, 564255, 639489, 1065815, 1692765, 1918467, 3197445, 5755401, 9592335, 28777005]

約数ペア:

[(1, 28777005), (3, 9592335), (5, 5755401), (9, 3197445), (15, 1918467), (17, 1692765), (27, 1065815), (45, 639489), (51, 564255), (85, 338553), (135, 213163), (153, 188085), (255, 112851), (459, 62695), (765, 37617), (2295, 12539)]