20988660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{59}}^1$

素因数の和:107

約数の個数: 216

約数和(自身を含む): 76416480

約数和(自身を除く): 55427820

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 49, 55, 59, 60, 66, 70, 77, 84, 98, 105, 110, 118, 121, 132, 140, 147, 154, 165, 177, 196, 210, 220, 231, 236, 242, 245, 294, 295, 308, 330, 354, 363, 385, 413, 420, 462, 484, 490, 539, 588, 590, 605, 649, 660, 708, 726, 735, 770, 826, 847, 885, 924, 980, 1078, 1155, 1180, 1210, 1239, 1298, 1452, 1470, 1540, 1617, 1652, 1694, 1770, 1815, 1947, 2065, 2156, 2310, 2420, 2478, 2541, 2596, 2695, 2891, 2940, 3234, 3245, 3388, 3540, 3630, 3894, 4130, 4235, 4543, 4620, 4956, 5082, 5390, 5782, 5929, 6195, 6468, 6490, 7139, 7260, 7788, 8085, 8260, 8470, 8673, 9086, 9735, 10164, 10780, 11564, 11858, 12390, 12705, 12980, 13629, 14278, 14455, 16170, 16940, 17346, 17787, 18172, 19470, 21417, 22715, 23716, 24780, 25410, 27258, 28556, 28910, 29645, 31801, 32340, 34692, 35574, 35695, 38940, 42834, 43365, 45430, 49973, 50820, 54516, 57820, 59290, 63602, 68145, 71148, 71390, 85668, 86730, 88935, 90860, 95403, 99946, 107085, 118580, 127204, 136290, 142780, 149919, 159005, 173460, 177870, 190806, 199892, 214170, 249865, 272580, 299838, 318010, 349811, 355740, 381612, 428340, 477015, 499730, 599676, 636020, 699622, 749595, 954030, 999460, 1049433, 1399244, 1499190, 1749055, 1908060, 2098866, 2998380, 3498110, 4197732, 5247165, 6996220, 10494330, 20988660]

約数ペア:

[(1, 20988660), (2, 10494330), (3, 6996220), (4, 5247165), (5, 4197732), (6, 3498110), (7, 2998380), (10, 2098866), (11, 1908060), (12, 1749055), (14, 1499190), (15, 1399244), (20, 1049433), (21, 999460), (22, 954030), (28, 749595), (30, 699622), (33, 636020), (35, 599676), (42, 499730), (44, 477015), (49, 428340), (55, 381612), (59, 355740), (60, 349811), (66, 318010), (70, 299838), (77, 272580), (84, 249865), (98, 214170), (105, 199892), (110, 190806), (118, 177870), (121, 173460), (132, 159005), (140, 149919), (147, 142780), (154, 136290), (165, 127204), (177, 118580), (196, 107085), (210, 99946), (220, 95403), (231, 90860), (236, 88935), (242, 86730), (245, 85668), (294, 71390), (295, 71148), (308, 68145), (330, 63602), (354, 59290), (363, 57820), (385, 54516), (413, 50820), (420, 49973), (462, 45430), (484, 43365), (490, 42834), (539, 38940), (588, 35695), (590, 35574), (605, 34692), (649, 32340), (660, 31801), (708, 29645), (726, 28910), (735, 28556), (770, 27258), (826, 25410), (847, 24780), (885, 23716), (924, 22715), (980, 21417), (1078, 19470), (1155, 18172), (1180, 17787), (1210, 17346), (1239, 16940), (1298, 16170), (1452, 14455), (1470, 14278), (1540, 13629), (1617, 12980), (1652, 12705), (1694, 12390), (1770, 11858), (1815, 11564), (1947, 10780), (2065, 10164), (2156, 9735), (2310, 9086), (2420, 8673), (2478, 8470), (2541, 8260), (2596, 8085), (2695, 7788), (2891, 7260), (2940, 7139), (3234, 6490), (3245, 6468), (3388, 6195), (3540, 5929), (3630, 5782), (3894, 5390), (4130, 5082), (4235, 4956), (4543, 4620)]