645645

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1$

素因数の和:82

約数の個数: 64

約数和(自身を含む): 1419264

約数和(自身を除く): 773619

約数列:

[1, 3, 5, 7, 11, 13, 15, 21, 33, 35, 39, 43, 55, 65, 77, 91, 105, 129, 143, 165, 195, 215, 231, 273, 301, 385, 429, 455, 473, 559, 645, 715, 903, 1001, 1155, 1365, 1419, 1505, 1677, 2145, 2365, 2795, 3003, 3311, 3913, 4515, 5005, 6149, 7095, 8385, 9933, 11739, 15015, 16555, 18447, 19565, 30745, 43043, 49665, 58695, 92235, 129129, 215215, 645645]

約数ペア:

[(1, 645645), (3, 215215), (5, 129129), (7, 92235), (11, 58695), (13, 49665), (15, 43043), (21, 30745), (33, 19565), (35, 18447), (39, 16555), (43, 15015), (55, 11739), (65, 9933), (77, 8385), (91, 7095), (105, 6149), (129, 5005), (143, 4515), (165, 3913), (195, 3311), (215, 3003), (231, 2795), (273, 2365), (301, 2145), (385, 1677), (429, 1505), (455, 1419), (473, 1365), (559, 1155), (645, 1001), (715, 903)]