81368475

素因数分解:

$3^1\times 5^2\times {\mathrm{113}}^1\times {\mathrm{9601}}^1$

素因数の和:9727

約数の個数: 24

約数和(自身を含む): 135733872

約数和(自身を除く): 54365397

約数列:

[1, 3, 5, 15, 25, 75, 113, 339, 565, 1695, 2825, 8475, 9601, 28803, 48005, 144015, 240025, 720075, 1084913, 3254739, 5424565, 16273695, 27122825, 81368475]

約数ペア:

[(1, 81368475), (3, 27122825), (5, 16273695), (15, 5424565), (25, 3254739), (75, 1084913), (113, 720075), (339, 240025), (565, 144015), (1695, 48005), (2825, 28803), (8475, 9601)]