20887020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{137}}^1$

素因数の和:181

約数の個数: 216

約数和(自身を含む): 80170272

約数和(自身を除く): 59283252

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 110, 121, 126, 132, 137, 140, 154, 165, 180, 198, 210, 220, 231, 242, 252, 274, 308, 315, 330, 363, 385, 396, 411, 420, 462, 484, 495, 548, 605, 630, 660, 685, 693, 726, 770, 822, 847, 924, 959, 990, 1089, 1155, 1210, 1233, 1260, 1370, 1386, 1452, 1507, 1540, 1644, 1694, 1815, 1918, 1980, 2055, 2178, 2310, 2420, 2466, 2541, 2740, 2772, 2877, 3014, 3388, 3465, 3630, 3836, 4110, 4235, 4356, 4521, 4620, 4795, 4932, 5082, 5445, 5754, 6028, 6165, 6930, 7260, 7535, 7623, 8220, 8470, 8631, 9042, 9590, 10164, 10549, 10890, 11508, 12330, 12705, 13563, 13860, 14385, 15070, 15246, 16577, 16940, 17262, 18084, 19180, 21098, 21780, 22605, 24660, 25410, 27126, 28770, 30140, 30492, 31647, 33154, 34524, 38115, 42196, 43155, 45210, 49731, 50820, 52745, 54252, 57540, 63294, 66308, 67815, 76230, 82885, 86310, 90420, 94941, 99462, 105490, 116039, 126588, 135630, 149193, 152460, 158235, 165770, 172620, 189882, 198924, 210980, 232078, 248655, 271260, 298386, 316470, 331540, 348117, 379764, 464156, 474705, 497310, 580195, 596772, 632940, 696234, 745965, 949410, 994620, 1044351, 1160390, 1392468, 1491930, 1740585, 1898820, 2088702, 2320780, 2983860, 3481170, 4177404, 5221755, 6962340, 10443510, 20887020]

約数ペア:

[(1, 20887020), (2, 10443510), (3, 6962340), (4, 5221755), (5, 4177404), (6, 3481170), (7, 2983860), (9, 2320780), (10, 2088702), (11, 1898820), (12, 1740585), (14, 1491930), (15, 1392468), (18, 1160390), (20, 1044351), (21, 994620), (22, 949410), (28, 745965), (30, 696234), (33, 632940), (35, 596772), (36, 580195), (42, 497310), (44, 474705), (45, 464156), (55, 379764), (60, 348117), (63, 331540), (66, 316470), (70, 298386), (77, 271260), (84, 248655), (90, 232078), (99, 210980), (105, 198924), (110, 189882), (121, 172620), (126, 165770), (132, 158235), (137, 152460), (140, 149193), (154, 135630), (165, 126588), (180, 116039), (198, 105490), (210, 99462), (220, 94941), (231, 90420), (242, 86310), (252, 82885), (274, 76230), (308, 67815), (315, 66308), (330, 63294), (363, 57540), (385, 54252), (396, 52745), (411, 50820), (420, 49731), (462, 45210), (484, 43155), (495, 42196), (548, 38115), (605, 34524), (630, 33154), (660, 31647), (685, 30492), (693, 30140), (726, 28770), (770, 27126), (822, 25410), (847, 24660), (924, 22605), (959, 21780), (990, 21098), (1089, 19180), (1155, 18084), (1210, 17262), (1233, 16940), (1260, 16577), (1370, 15246), (1386, 15070), (1452, 14385), (1507, 13860), (1540, 13563), (1644, 12705), (1694, 12330), (1815, 11508), (1918, 10890), (1980, 10549), (2055, 10164), (2178, 9590), (2310, 9042), (2420, 8631), (2466, 8470), (2541, 8220), (2740, 7623), (2772, 7535), (2877, 7260), (3014, 6930), (3388, 6165), (3465, 6028), (3630, 5754), (3836, 5445), (4110, 5082), (4235, 4932), (4356, 4795), (4521, 4620)]