209401075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{4703}}^1$

素因数の和:4863

約数の個数: 24

約数和(自身を含む): 281731968

約数和(自身を除く): 72330893

約数列:

[1, 5, 13, 25, 65, 137, 325, 685, 1781, 3425, 4703, 8905, 23515, 44525, 61139, 117575, 305695, 644311, 1528475, 3221555, 8376043, 16107775, 41880215, 209401075]

約数ペア:

[(1, 209401075), (5, 41880215), (13, 16107775), (25, 8376043), (65, 3221555), (137, 1528475), (325, 644311), (685, 305695), (1781, 117575), (3425, 61139), (4703, 44525), (8905, 23515)]