81387720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{421}}^1$

素因数の和:620

約数の個数: 128

約数和(自身を含む): 273456000

約数和(自身を除く): 192068280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 179, 180, 216, 270, 358, 360, 421, 537, 540, 716, 842, 895, 1074, 1080, 1263, 1432, 1611, 1684, 1790, 2105, 2148, 2526, 2685, 3222, 3368, 3580, 3789, 4210, 4296, 4833, 5052, 5370, 6315, 6444, 7160, 7578, 8055, 8420, 9666, 10104, 10740, 11367, 12630, 12888, 15156, 16110, 16840, 18945, 19332, 21480, 22734, 24165, 25260, 30312, 32220, 37890, 38664, 45468, 48330, 50520, 56835, 64440, 75359, 75780, 90936, 96660, 113670, 150718, 151560, 193320, 226077, 227340, 301436, 376795, 452154, 454680, 602872, 678231, 753590, 904308, 1130385, 1356462, 1507180, 1808616, 2034693, 2260770, 2712924, 3014360, 3391155, 4069386, 4521540, 5425848, 6782310, 8138772, 9043080, 10173465, 13564620, 16277544, 20346930, 27129240, 40693860, 81387720]

約数ペア:

[(1, 81387720), (2, 40693860), (3, 27129240), (4, 20346930), (5, 16277544), (6, 13564620), (8, 10173465), (9, 9043080), (10, 8138772), (12, 6782310), (15, 5425848), (18, 4521540), (20, 4069386), (24, 3391155), (27, 3014360), (30, 2712924), (36, 2260770), (40, 2034693), (45, 1808616), (54, 1507180), (60, 1356462), (72, 1130385), (90, 904308), (108, 753590), (120, 678231), (135, 602872), (179, 454680), (180, 452154), (216, 376795), (270, 301436), (358, 227340), (360, 226077), (421, 193320), (537, 151560), (540, 150718), (716, 113670), (842, 96660), (895, 90936), (1074, 75780), (1080, 75359), (1263, 64440), (1432, 56835), (1611, 50520), (1684, 48330), (1790, 45468), (2105, 38664), (2148, 37890), (2526, 32220), (2685, 30312), (3222, 25260), (3368, 24165), (3580, 22734), (3789, 21480), (4210, 19332), (4296, 18945), (4833, 16840), (5052, 16110), (5370, 15156), (6315, 12888), (6444, 12630), (7160, 11367), (7578, 10740), (8055, 10104), (8420, 9666)]