81291945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{2339}}^1$

素因数の和:2685

約数の個数: 32

約数和(自身を含む): 149160960

約数和(自身を除く): 67869015

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 331, 993, 1655, 2317, 2339, 4965, 6951, 7017, 11585, 11695, 16373, 34755, 35085, 49119, 81865, 245595, 774209, 2322627, 3871045, 5419463, 11613135, 16258389, 27097315, 81291945]

約数ペア:

[(1, 81291945), (3, 27097315), (5, 16258389), (7, 11613135), (15, 5419463), (21, 3871045), (35, 2322627), (105, 774209), (331, 245595), (993, 81865), (1655, 49119), (2317, 35085), (2339, 34755), (4965, 16373), (6951, 11695), (7017, 11585)]