81040400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{281}}^1$

素因数の和:409

約数の個数: 120

約数和(自身を含む): 225473664

約数和(自身を除く): 144433264

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 103, 112, 140, 175, 200, 206, 280, 281, 350, 400, 412, 515, 560, 562, 700, 721, 824, 1030, 1124, 1400, 1405, 1442, 1648, 1967, 2060, 2248, 2575, 2800, 2810, 2884, 3605, 3934, 4120, 4496, 5150, 5620, 5768, 7025, 7210, 7868, 8240, 9835, 10300, 11240, 11536, 14050, 14420, 15736, 18025, 19670, 20600, 22480, 28100, 28840, 28943, 31472, 36050, 39340, 41200, 49175, 56200, 57680, 57886, 72100, 78680, 98350, 112400, 115772, 144200, 144715, 157360, 196700, 202601, 231544, 288400, 289430, 393400, 405202, 463088, 578860, 723575, 786800, 810404, 1013005, 1157720, 1447150, 1620808, 2026010, 2315440, 2894300, 3241616, 4052020, 5065025, 5788600, 8104040, 10130050, 11577200, 16208080, 20260100, 40520200, 81040400]

約数ペア:

[(1, 81040400), (2, 40520200), (4, 20260100), (5, 16208080), (7, 11577200), (8, 10130050), (10, 8104040), (14, 5788600), (16, 5065025), (20, 4052020), (25, 3241616), (28, 2894300), (35, 2315440), (40, 2026010), (50, 1620808), (56, 1447150), (70, 1157720), (80, 1013005), (100, 810404), (103, 786800), (112, 723575), (140, 578860), (175, 463088), (200, 405202), (206, 393400), (280, 289430), (281, 288400), (350, 231544), (400, 202601), (412, 196700), (515, 157360), (560, 144715), (562, 144200), (700, 115772), (721, 112400), (824, 98350), (1030, 78680), (1124, 72100), (1400, 57886), (1405, 57680), (1442, 56200), (1648, 49175), (1967, 41200), (2060, 39340), (2248, 36050), (2575, 31472), (2800, 28943), (2810, 28840), (2884, 28100), (3605, 22480), (3934, 20600), (4120, 19670), (4496, 18025), (5150, 15736), (5620, 14420), (5768, 14050), (7025, 11536), (7210, 11240), (7868, 10300), (8240, 9835)]