1287840555

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{986851}}^1$

素因数の和:986891

約数の個数: 24

約数和(自身を含む): 2309233680

約数和(自身を除く): 1021393125

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 986851, 2960553, 4934255, 8881659, 14802765, 28618679, 44408295, 85856037, 143093395, 257568111, 429280185, 1287840555]

約数ペア:

[(1, 1287840555), (3, 429280185), (5, 257568111), (9, 143093395), (15, 85856037), (29, 44408295), (45, 28618679), (87, 14802765), (145, 8881659), (261, 4934255), (435, 2960553), (1305, 986851)]