81031440

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{347}}^1$

素因数の和:509

約数の個数: 160

約数和(自身を含む): 289981440

約数和(自身を除く): 208950000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 139, 140, 168, 210, 240, 278, 280, 336, 347, 417, 420, 556, 560, 694, 695, 834, 840, 973, 1041, 1112, 1388, 1390, 1668, 1680, 1735, 1946, 2082, 2085, 2224, 2429, 2776, 2780, 2919, 3336, 3470, 3892, 4164, 4170, 4858, 4865, 5205, 5552, 5560, 5838, 6672, 6940, 7287, 7784, 8328, 8340, 9716, 9730, 10410, 11120, 11676, 12145, 13880, 14574, 14595, 15568, 16656, 16680, 19432, 19460, 20820, 23352, 24290, 27760, 29148, 29190, 33360, 36435, 38864, 38920, 41640, 46704, 48233, 48580, 58296, 58380, 72870, 77840, 83280, 96466, 97160, 116592, 116760, 144699, 145740, 192932, 194320, 233520, 241165, 289398, 291480, 337631, 385864, 482330, 578796, 582960, 675262, 723495, 771728, 964660, 1012893, 1157592, 1350524, 1446990, 1688155, 1929320, 2025786, 2315184, 2701048, 2893980, 3376310, 3858640, 4051572, 5064465, 5402096, 5787960, 6752620, 8103144, 10128930, 11575920, 13505240, 16206288, 20257860, 27010480, 40515720, 81031440]

約数ペア:

[(1, 81031440), (2, 40515720), (3, 27010480), (4, 20257860), (5, 16206288), (6, 13505240), (7, 11575920), (8, 10128930), (10, 8103144), (12, 6752620), (14, 5787960), (15, 5402096), (16, 5064465), (20, 4051572), (21, 3858640), (24, 3376310), (28, 2893980), (30, 2701048), (35, 2315184), (40, 2025786), (42, 1929320), (48, 1688155), (56, 1446990), (60, 1350524), (70, 1157592), (80, 1012893), (84, 964660), (105, 771728), (112, 723495), (120, 675262), (139, 582960), (140, 578796), (168, 482330), (210, 385864), (240, 337631), (278, 291480), (280, 289398), (336, 241165), (347, 233520), (417, 194320), (420, 192932), (556, 145740), (560, 144699), (694, 116760), (695, 116592), (834, 97160), (840, 96466), (973, 83280), (1041, 77840), (1112, 72870), (1388, 58380), (1390, 58296), (1668, 48580), (1680, 48233), (1735, 46704), (1946, 41640), (2082, 38920), (2085, 38864), (2224, 36435), (2429, 33360), (2776, 29190), (2780, 29148), (2919, 27760), (3336, 24290), (3470, 23352), (3892, 20820), (4164, 19460), (4170, 19432), (4858, 16680), (4865, 16656), (5205, 15568), (5552, 14595), (5560, 14574), (5838, 13880), (6672, 12145), (6940, 11676), (7287, 11120), (7784, 10410), (8328, 9730), (8340, 9716)]