81447840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{347}}^1$

素因数の和:531

約数の個数: 144

約数和(自身を含む): 280451808

約数和(自身を除く): 199003968

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 163, 180, 240, 288, 326, 347, 360, 480, 489, 652, 694, 720, 815, 978, 1041, 1304, 1388, 1440, 1467, 1630, 1735, 1956, 2082, 2445, 2608, 2776, 2934, 3123, 3260, 3470, 3912, 4164, 4890, 5205, 5216, 5552, 5868, 6246, 6520, 6940, 7335, 7824, 8328, 9780, 10410, 11104, 11736, 12492, 13040, 13880, 14670, 15615, 15648, 16656, 19560, 20820, 23472, 24984, 26080, 27760, 29340, 31230, 33312, 39120, 41640, 46944, 49968, 55520, 56561, 58680, 62460, 78240, 83280, 99936, 113122, 117360, 124920, 166560, 169683, 226244, 234720, 249840, 282805, 339366, 452488, 499680, 509049, 565610, 678732, 848415, 904976, 1018098, 1131220, 1357464, 1696830, 1809952, 2036196, 2262440, 2545245, 2714928, 3393660, 4072392, 4524880, 5090490, 5429856, 6787320, 8144784, 9049760, 10180980, 13574640, 16289568, 20361960, 27149280, 40723920, 81447840]

約数ペア:

[(1, 81447840), (2, 40723920), (3, 27149280), (4, 20361960), (5, 16289568), (6, 13574640), (8, 10180980), (9, 9049760), (10, 8144784), (12, 6787320), (15, 5429856), (16, 5090490), (18, 4524880), (20, 4072392), (24, 3393660), (30, 2714928), (32, 2545245), (36, 2262440), (40, 2036196), (45, 1809952), (48, 1696830), (60, 1357464), (72, 1131220), (80, 1018098), (90, 904976), (96, 848415), (120, 678732), (144, 565610), (160, 509049), (163, 499680), (180, 452488), (240, 339366), (288, 282805), (326, 249840), (347, 234720), (360, 226244), (480, 169683), (489, 166560), (652, 124920), (694, 117360), (720, 113122), (815, 99936), (978, 83280), (1041, 78240), (1304, 62460), (1388, 58680), (1440, 56561), (1467, 55520), (1630, 49968), (1735, 46944), (1956, 41640), (2082, 39120), (2445, 33312), (2608, 31230), (2776, 29340), (2934, 27760), (3123, 26080), (3260, 24984), (3470, 23472), (3912, 20820), (4164, 19560), (4890, 16656), (5205, 15648), (5216, 15615), (5552, 14670), (5868, 13880), (6246, 13040), (6520, 12492), (6940, 11736), (7335, 11104), (7824, 10410), (8328, 9780)]