205180515

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{74747}}^1$

素因数の和:74819

約数の個数: 24

約数和(自身を含む): 361481328

約数和(自身を除く): 156300813

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745, 74747, 224241, 373735, 672723, 1121205, 3363615, 4559567, 13678701, 22797835, 41036103, 68393505, 205180515]

約数ペア:

[(1, 205180515), (3, 68393505), (5, 41036103), (9, 22797835), (15, 13678701), (45, 4559567), (61, 3363615), (183, 1121205), (305, 672723), (549, 373735), (915, 224241), (2745, 74747)]