81218835

素因数分解:

$3^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{2141}}^1$

素因数の和:2436

約数の個数: 32

約数和(自身を含む): 144970560

約数和(自身を除く): 63751725

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 281, 843, 1405, 2141, 2529, 4215, 6423, 7587, 10705, 12645, 19269, 32115, 37935, 57807, 96345, 289035, 601621, 1804863, 3008105, 5414589, 9024315, 16243767, 27072945, 81218835]

約数ペア:

[(1, 81218835), (3, 27072945), (5, 16243767), (9, 9024315), (15, 5414589), (27, 3008105), (45, 1804863), (135, 601621), (281, 289035), (843, 96345), (1405, 57807), (2141, 37935), (2529, 32115), (4215, 19269), (6423, 12645), (7587, 10705)]