20689020

素因数分解:

$2^2\times 3^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1$

素因数の和:84

約数の個数: 192

約数和(自身を含む): 72737280

約数和(自身を除く): 52048260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 43, 44, 45, 54, 55, 60, 66, 81, 86, 90, 99, 108, 110, 129, 132, 135, 162, 165, 172, 180, 198, 215, 220, 243, 258, 270, 297, 324, 330, 387, 396, 405, 430, 473, 486, 495, 516, 540, 594, 645, 660, 729, 774, 810, 860, 891, 946, 972, 990, 1161, 1188, 1215, 1290, 1419, 1458, 1485, 1548, 1620, 1782, 1892, 1935, 1980, 2187, 2322, 2365, 2430, 2580, 2673, 2838, 2916, 2970, 3483, 3564, 3645, 3870, 4257, 4374, 4455, 4644, 4730, 4860, 5346, 5676, 5805, 5940, 6966, 7095, 7290, 7740, 8019, 8514, 8748, 8910, 9460, 10449, 10692, 10935, 11610, 12771, 13365, 13932, 14190, 14580, 16038, 17028, 17415, 17820, 20898, 21285, 21870, 23220, 24057, 25542, 26730, 28380, 31347, 32076, 34830, 38313, 40095, 41796, 42570, 43740, 48114, 51084, 52245, 53460, 62694, 63855, 69660, 76626, 80190, 85140, 94041, 96228, 104490, 114939, 120285, 125388, 127710, 153252, 156735, 160380, 188082, 191565, 208980, 229878, 240570, 255420, 313470, 344817, 376164, 383130, 459756, 470205, 481140, 574695, 626940, 689634, 766260, 940410, 1034451, 1149390, 1379268, 1724085, 1880820, 2068902, 2298780, 3448170, 4137804, 5172255, 6896340, 10344510, 20689020]

約数ペア:

[(1, 20689020), (2, 10344510), (3, 6896340), (4, 5172255), (5, 4137804), (6, 3448170), (9, 2298780), (10, 2068902), (11, 1880820), (12, 1724085), (15, 1379268), (18, 1149390), (20, 1034451), (22, 940410), (27, 766260), (30, 689634), (33, 626940), (36, 574695), (43, 481140), (44, 470205), (45, 459756), (54, 383130), (55, 376164), (60, 344817), (66, 313470), (81, 255420), (86, 240570), (90, 229878), (99, 208980), (108, 191565), (110, 188082), (129, 160380), (132, 156735), (135, 153252), (162, 127710), (165, 125388), (172, 120285), (180, 114939), (198, 104490), (215, 96228), (220, 94041), (243, 85140), (258, 80190), (270, 76626), (297, 69660), (324, 63855), (330, 62694), (387, 53460), (396, 52245), (405, 51084), (430, 48114), (473, 43740), (486, 42570), (495, 41796), (516, 40095), (540, 38313), (594, 34830), (645, 32076), (660, 31347), (729, 28380), (774, 26730), (810, 25542), (860, 24057), (891, 23220), (946, 21870), (972, 21285), (990, 20898), (1161, 17820), (1188, 17415), (1215, 17028), (1290, 16038), (1419, 14580), (1458, 14190), (1485, 13932), (1548, 13365), (1620, 12771), (1782, 11610), (1892, 10935), (1935, 10692), (1980, 10449), (2187, 9460), (2322, 8910), (2365, 8748), (2430, 8514), (2580, 8019), (2673, 7740), (2838, 7290), (2916, 7095), (2970, 6966), (3483, 5940), (3564, 5805), (3645, 5676), (3870, 5346), (4257, 4860), (4374, 4730), (4455, 4644)]