2540655

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 4900896

約数和(自身を除く): 2360241

約数列:

[1, 3, 5, 9, 13, 15, 39, 43, 45, 65, 101, 117, 129, 195, 215, 303, 387, 505, 559, 585, 645, 909, 1313, 1515, 1677, 1935, 2795, 3939, 4343, 4545, 5031, 6565, 8385, 11817, 13029, 19695, 21715, 25155, 39087, 56459, 59085, 65145, 169377, 195435, 282295, 508131, 846885, 2540655]

約数ペア:

[(1, 2540655), (3, 846885), (5, 508131), (9, 282295), (13, 195435), (15, 169377), (39, 65145), (43, 59085), (45, 56459), (65, 39087), (101, 25155), (117, 21715), (129, 19695), (195, 13029), (215, 11817), (303, 8385), (387, 6565), (505, 5031), (559, 4545), (585, 4343), (645, 3939), (909, 2795), (1313, 1935), (1515, 1677)]