81578565

素因数分解:

$3^2\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1867}}^1$

素因数の和:2849

約数の個数: 24

約数和(自身を含む): 141624288

約数和(自身を除く): 60045723

約数列:

[1, 3, 5, 9, 15, 45, 971, 1867, 2913, 4855, 5601, 8739, 9335, 14565, 16803, 28005, 43695, 84015, 1812857, 5438571, 9064285, 16315713, 27192855, 81578565]

約数ペア:

[(1, 81578565), (3, 27192855), (5, 16315713), (9, 9064285), (15, 5438571), (45, 1812857), (971, 84015), (1867, 43695), (2913, 28005), (4855, 16803), (5601, 14565), (8739, 9335)]