81978480

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{4217}}^1$

素因数の和:4245

約数の個数: 120

約数和(自身を含む): 285575472

約数和(自身を除く): 203596992

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 243, 270, 324, 360, 405, 432, 486, 540, 648, 720, 810, 972, 1080, 1215, 1296, 1620, 1944, 2160, 2430, 3240, 3888, 4217, 4860, 6480, 8434, 9720, 12651, 16868, 19440, 21085, 25302, 33736, 37953, 42170, 50604, 63255, 67472, 75906, 84340, 101208, 113859, 126510, 151812, 168680, 189765, 202416, 227718, 253020, 303624, 337360, 341577, 379530, 455436, 506040, 569295, 607248, 683154, 759060, 910872, 1012080, 1024731, 1138590, 1366308, 1518120, 1707885, 1821744, 2049462, 2277180, 2732616, 3036240, 3415770, 4098924, 4554360, 5123655, 5465232, 6831540, 8197848, 9108720, 10247310, 13663080, 16395696, 20494620, 27326160, 40989240, 81978480]

約数ペア:

[(1, 81978480), (2, 40989240), (3, 27326160), (4, 20494620), (5, 16395696), (6, 13663080), (8, 10247310), (9, 9108720), (10, 8197848), (12, 6831540), (15, 5465232), (16, 5123655), (18, 4554360), (20, 4098924), (24, 3415770), (27, 3036240), (30, 2732616), (36, 2277180), (40, 2049462), (45, 1821744), (48, 1707885), (54, 1518120), (60, 1366308), (72, 1138590), (80, 1024731), (81, 1012080), (90, 910872), (108, 759060), (120, 683154), (135, 607248), (144, 569295), (162, 506040), (180, 455436), (216, 379530), (240, 341577), (243, 337360), (270, 303624), (324, 253020), (360, 227718), (405, 202416), (432, 189765), (486, 168680), (540, 151812), (648, 126510), (720, 113859), (810, 101208), (972, 84340), (1080, 75906), (1215, 67472), (1296, 63255), (1620, 50604), (1944, 42170), (2160, 37953), (2430, 33736), (3240, 25302), (3888, 21085), (4217, 19440), (4860, 16868), (6480, 12651), (8434, 9720)]