16780815

素因数分解:

$3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1451}}^1$

素因数の和:1719

約数の個数: 24

約数和(自身を含む): 29220048

約数和(自身を除く): 12439233

約数列:

[1, 3, 5, 9, 15, 45, 257, 771, 1285, 1451, 2313, 3855, 4353, 7255, 11565, 13059, 21765, 65295, 372907, 1118721, 1864535, 3356163, 5593605, 16780815]

約数ペア:

[(1, 16780815), (3, 5593605), (5, 3356163), (9, 1864535), (15, 1118721), (45, 372907), (257, 65295), (771, 21765), (1285, 13059), (1451, 11565), (2313, 7255), (3855, 4353)]