205127720

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{14951}}^1$

素因数の和:14983

約数の個数: 64

約数和(自身を含む): 538272000

約数和(自身を除く): 333144280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1715, 1960, 2744, 3430, 6860, 13720, 14951, 29902, 59804, 74755, 104657, 119608, 149510, 209314, 299020, 418628, 523285, 598040, 732599, 837256, 1046570, 1465198, 2093140, 2930396, 3662995, 4186280, 5128193, 5860792, 7325990, 10256386, 14651980, 20512772, 25640965, 29303960, 41025544, 51281930, 102563860, 205127720]

約数ペア:

[(1, 205127720), (2, 102563860), (4, 51281930), (5, 41025544), (7, 29303960), (8, 25640965), (10, 20512772), (14, 14651980), (20, 10256386), (28, 7325990), (35, 5860792), (40, 5128193), (49, 4186280), (56, 3662995), (70, 2930396), (98, 2093140), (140, 1465198), (196, 1046570), (245, 837256), (280, 732599), (343, 598040), (392, 523285), (490, 418628), (686, 299020), (980, 209314), (1372, 149510), (1715, 119608), (1960, 104657), (2744, 74755), (3430, 59804), (6860, 29902), (13720, 14951)]