81423765

素因数分解:

$3^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2657}}^1$

素因数の和:2898

約数の個数: 32

約数和(自身を含む): 145445760

約数和(自身を除く): 64021995

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 227, 681, 1135, 2043, 2657, 3405, 6129, 7971, 10215, 13285, 23913, 30645, 39855, 71739, 119565, 358695, 603139, 1809417, 3015695, 5428251, 9047085, 16284753, 27141255, 81423765]

約数ペア:

[(1, 81423765), (3, 27141255), (5, 16284753), (9, 9047085), (15, 5428251), (27, 3015695), (45, 1809417), (135, 603139), (227, 358695), (681, 119565), (1135, 71739), (2043, 39855), (2657, 30645), (3405, 23913), (6129, 13285), (7971, 10215)]