81411840

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1$

素因数の和:255

約数の個数: 216

約数和(自身を含む): 290803968

約数和(自身を除く): 209392128

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 37, 40, 45, 48, 60, 64, 72, 74, 80, 90, 96, 111, 120, 128, 144, 148, 160, 180, 185, 191, 192, 222, 240, 256, 288, 296, 320, 333, 360, 370, 382, 384, 444, 480, 555, 573, 576, 592, 640, 666, 720, 740, 764, 768, 888, 955, 960, 1110, 1146, 1152, 1184, 1280, 1332, 1440, 1480, 1528, 1665, 1719, 1776, 1910, 1920, 2220, 2292, 2304, 2368, 2664, 2865, 2880, 2960, 3056, 3330, 3438, 3552, 3820, 3840, 4440, 4584, 4736, 5328, 5730, 5760, 5920, 6112, 6660, 6876, 7067, 7104, 7640, 8595, 8880, 9168, 9472, 10656, 11460, 11520, 11840, 12224, 13320, 13752, 14134, 14208, 15280, 17190, 17760, 18336, 21201, 21312, 22920, 23680, 24448, 26640, 27504, 28268, 28416, 30560, 34380, 35335, 35520, 36672, 42402, 42624, 45840, 47360, 48896, 53280, 55008, 56536, 61120, 63603, 68760, 70670, 71040, 73344, 84804, 85248, 91680, 106005, 106560, 110016, 113072, 122240, 127206, 137520, 141340, 142080, 146688, 169608, 183360, 212010, 213120, 220032, 226144, 244480, 254412, 275040, 282680, 318015, 339216, 366720, 424020, 426240, 440064, 452288, 508824, 550080, 565360, 636030, 678432, 733440, 848040, 904576, 1017648, 1100160, 1130720, 1272060, 1356864, 1696080, 1809152, 2035296, 2200320, 2261440, 2544120, 2713728, 3392160, 4070592, 4522880, 5088240, 5427456, 6784320, 8141184, 9045760, 10176480, 13568640, 16282368, 20352960, 27137280, 40705920, 81411840]

約数ペア:

[(1, 81411840), (2, 40705920), (3, 27137280), (4, 20352960), (5, 16282368), (6, 13568640), (8, 10176480), (9, 9045760), (10, 8141184), (12, 6784320), (15, 5427456), (16, 5088240), (18, 4522880), (20, 4070592), (24, 3392160), (30, 2713728), (32, 2544120), (36, 2261440), (37, 2200320), (40, 2035296), (45, 1809152), (48, 1696080), (60, 1356864), (64, 1272060), (72, 1130720), (74, 1100160), (80, 1017648), (90, 904576), (96, 848040), (111, 733440), (120, 678432), (128, 636030), (144, 565360), (148, 550080), (160, 508824), (180, 452288), (185, 440064), (191, 426240), (192, 424020), (222, 366720), (240, 339216), (256, 318015), (288, 282680), (296, 275040), (320, 254412), (333, 244480), (360, 226144), (370, 220032), (382, 213120), (384, 212010), (444, 183360), (480, 169608), (555, 146688), (573, 142080), (576, 141340), (592, 137520), (640, 127206), (666, 122240), (720, 113072), (740, 110016), (764, 106560), (768, 106005), (888, 91680), (955, 85248), (960, 84804), (1110, 73344), (1146, 71040), (1152, 70670), (1184, 68760), (1280, 63603), (1332, 61120), (1440, 56536), (1480, 55008), (1528, 53280), (1665, 48896), (1719, 47360), (1776, 45840), (1910, 42624), (1920, 42402), (2220, 36672), (2292, 35520), (2304, 35335), (2368, 34380), (2664, 30560), (2865, 28416), (2880, 28268), (2960, 27504), (3056, 26640), (3330, 24448), (3438, 23680), (3552, 22920), (3820, 21312), (3840, 21201), (4440, 18336), (4584, 17760), (4736, 17190), (5328, 15280), (5730, 14208), (5760, 14134), (5920, 13752), (6112, 13320), (6660, 12224), (6876, 11840), (7067, 11520), (7104, 11460), (7640, 10656), (8595, 9472), (8880, 9168)]