205780925

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{311}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 309504000

約数和(自身を除く): 103723075

約数列:

[1, 5, 7, 19, 25, 35, 95, 133, 175, 199, 311, 475, 665, 995, 1393, 1555, 2177, 3325, 3781, 4975, 5909, 6965, 7775, 10885, 18905, 26467, 29545, 34825, 41363, 54425, 61889, 94525, 132335, 147725, 206815, 309445, 433223, 661675, 1034075, 1175891, 1547225, 2166115, 5879455, 8231237, 10830575, 29397275, 41156185, 205780925]

約数ペア:

[(1, 205780925), (5, 41156185), (7, 29397275), (19, 10830575), (25, 8231237), (35, 5879455), (95, 2166115), (133, 1547225), (175, 1175891), (199, 1034075), (311, 661675), (475, 433223), (665, 309445), (995, 206815), (1393, 147725), (1555, 132335), (2177, 94525), (3325, 61889), (3781, 54425), (4975, 41363), (5909, 34825), (6965, 29545), (7775, 26467), (10885, 18905)]