257991720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{1093}}^1$

素因数の和:1395

約数の個数: 128

約数和(自身を含む): 888503040

約数和(自身を除く): 630511320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 281, 420, 562, 840, 843, 1093, 1124, 1405, 1686, 1967, 2186, 2248, 2810, 3279, 3372, 3934, 4215, 4372, 5465, 5620, 5901, 6558, 6744, 7651, 7868, 8430, 8744, 9835, 10930, 11240, 11802, 13116, 15302, 15736, 16395, 16860, 19670, 21860, 22953, 23604, 26232, 29505, 30604, 32790, 33720, 38255, 39340, 43720, 45906, 47208, 59010, 61208, 65580, 76510, 78680, 91812, 114765, 118020, 131160, 153020, 183624, 229530, 236040, 306040, 307133, 459060, 614266, 918120, 921399, 1228532, 1535665, 1842798, 2149931, 2457064, 3071330, 3685596, 4299862, 4606995, 6142660, 6449793, 7371192, 8599724, 9213990, 10749655, 12285320, 12899586, 17199448, 18427980, 21499310, 25799172, 32248965, 36855960, 42998620, 51598344, 64497930, 85997240, 128995860, 257991720]

約数ペア:

[(1, 257991720), (2, 128995860), (3, 85997240), (4, 64497930), (5, 51598344), (6, 42998620), (7, 36855960), (8, 32248965), (10, 25799172), (12, 21499310), (14, 18427980), (15, 17199448), (20, 12899586), (21, 12285320), (24, 10749655), (28, 9213990), (30, 8599724), (35, 7371192), (40, 6449793), (42, 6142660), (56, 4606995), (60, 4299862), (70, 3685596), (84, 3071330), (105, 2457064), (120, 2149931), (140, 1842798), (168, 1535665), (210, 1228532), (280, 921399), (281, 918120), (420, 614266), (562, 459060), (840, 307133), (843, 306040), (1093, 236040), (1124, 229530), (1405, 183624), (1686, 153020), (1967, 131160), (2186, 118020), (2248, 114765), (2810, 91812), (3279, 78680), (3372, 76510), (3934, 65580), (4215, 61208), (4372, 59010), (5465, 47208), (5620, 45906), (5901, 43720), (6558, 39340), (6744, 38255), (7651, 33720), (7868, 32790), (8430, 30604), (8744, 29505), (9835, 26232), (10930, 23604), (11240, 22953), (11802, 21860), (13116, 19670), (15302, 16860), (15736, 16395)]