178678245

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^2\times {\mathrm{139}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 309234240

約数和(自身を除く): 130555995

約数列:

[1, 3, 5, 15, 17, 51, 71, 85, 139, 213, 255, 355, 417, 695, 1065, 1207, 2085, 2363, 3621, 5041, 6035, 7089, 9869, 11815, 15123, 18105, 25205, 29607, 35445, 49345, 75615, 85697, 148035, 167773, 257091, 428485, 503319, 700699, 838865, 1285455, 2102097, 2516595, 3503495, 10510485, 11911883, 35735649, 59559415, 178678245]

約数ペア:

[(1, 178678245), (3, 59559415), (5, 35735649), (15, 11911883), (17, 10510485), (51, 3503495), (71, 2516595), (85, 2102097), (139, 1285455), (213, 838865), (255, 700699), (355, 503319), (417, 428485), (695, 257091), (1065, 167773), (1207, 148035), (2085, 85697), (2363, 75615), (3621, 49345), (5041, 35445), (6035, 29607), (7089, 25205), (9869, 18105), (11815, 15123)]