20685240

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1$

素因数の和:306

約数の個数: 128

約数和(自身を含む): 69984000

約数和(自身を除く): 49298760

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, 107, 108, 120, 135, 179, 180, 214, 216, 270, 321, 358, 360, 428, 535, 537, 540, 642, 716, 856, 895, 963, 1070, 1074, 1080, 1284, 1432, 1605, 1611, 1790, 1926, 2140, 2148, 2568, 2685, 2889, 3210, 3222, 3580, 3852, 4280, 4296, 4815, 4833, 5370, 5778, 6420, 6444, 7160, 7704, 8055, 9630, 9666, 10740, 11556, 12840, 12888, 14445, 16110, 19153, 19260, 19332, 21480, 23112, 24165, 28890, 32220, 38306, 38520, 38664, 48330, 57459, 57780, 64440, 76612, 95765, 96660, 114918, 115560, 153224, 172377, 191530, 193320, 229836, 287295, 344754, 383060, 459672, 517131, 574590, 689508, 766120, 861885, 1034262, 1149180, 1379016, 1723770, 2068524, 2298360, 2585655, 3447540, 4137048, 5171310, 6895080, 10342620, 20685240]

約数ペア:

[(1, 20685240), (2, 10342620), (3, 6895080), (4, 5171310), (5, 4137048), (6, 3447540), (8, 2585655), (9, 2298360), (10, 2068524), (12, 1723770), (15, 1379016), (18, 1149180), (20, 1034262), (24, 861885), (27, 766120), (30, 689508), (36, 574590), (40, 517131), (45, 459672), (54, 383060), (60, 344754), (72, 287295), (90, 229836), (107, 193320), (108, 191530), (120, 172377), (135, 153224), (179, 115560), (180, 114918), (214, 96660), (216, 95765), (270, 76612), (321, 64440), (358, 57780), (360, 57459), (428, 48330), (535, 38664), (537, 38520), (540, 38306), (642, 32220), (716, 28890), (856, 24165), (895, 23112), (963, 21480), (1070, 19332), (1074, 19260), (1080, 19153), (1284, 16110), (1432, 14445), (1605, 12888), (1611, 12840), (1790, 11556), (1926, 10740), (2140, 9666), (2148, 9630), (2568, 8055), (2685, 7704), (2889, 7160), (3210, 6444), (3222, 6420), (3580, 5778), (3852, 5370), (4280, 4833), (4296, 4815)]