81369765

素因数分解:

$3^5\times 5^1\times {\mathrm{193}}^1\times {\mathrm{347}}^1$

素因数の和:560

約数の個数: 48

約数和(自身を含む): 147446208

約数和(自身を除く): 66076443

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 193, 243, 347, 405, 579, 965, 1041, 1215, 1735, 1737, 2895, 3123, 5205, 5211, 8685, 9369, 15615, 15633, 26055, 28107, 46845, 46899, 66971, 78165, 84321, 140535, 200913, 234495, 334855, 421605, 602739, 1004565, 1808217, 3013695, 5424651, 9041085, 16273953, 27123255, 81369765]

約数ペア:

[(1, 81369765), (3, 27123255), (5, 16273953), (9, 9041085), (15, 5424651), (27, 3013695), (45, 1808217), (81, 1004565), (135, 602739), (193, 421605), (243, 334855), (347, 234495), (405, 200913), (579, 140535), (965, 84321), (1041, 78165), (1215, 66971), (1735, 46899), (1737, 46845), (2895, 28107), (3123, 26055), (5205, 15633), (5211, 15615), (8685, 9369)]