261027

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:139

約数の個数: 24

約数和(自身を含む): 428064

約数和(自身を除く): 167037

約数列:

[1, 3, 9, 13, 23, 39, 69, 97, 117, 207, 291, 299, 873, 897, 1261, 2231, 2691, 3783, 6693, 11349, 20079, 29003, 87009, 261027]

約数ペア:

[(1, 261027), (3, 87009), (9, 29003), (13, 20079), (23, 11349), (39, 6693), (69, 3783), (97, 2691), (117, 2231), (207, 1261), (291, 897), (299, 873)]