81787185

素因数分解:

$3^3\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1061}}^1$

素因数の和:1646

約数の個数: 32

約数和(自身を含む): 145791360

約数和(自身を除く): 64004175

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 571, 1061, 1713, 2855, 3183, 5139, 5305, 8565, 9549, 15417, 15915, 25695, 28647, 47745, 77085, 143235, 605831, 1817493, 3029155, 5452479, 9087465, 16357437, 27262395, 81787185]

約数ペア:

[(1, 81787185), (3, 27262395), (5, 16357437), (9, 9087465), (15, 5452479), (27, 3029155), (45, 1817493), (135, 605831), (571, 143235), (1061, 77085), (1713, 47745), (2855, 28647), (3183, 25695), (5139, 15915), (5305, 15417), (8565, 9549)]