20784339940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{127}}^1\times {\mathrm{6917}}^1$

素因数の和:7086

約数の個数: 144

約数和(自身を含む): 54447869952

約数和(自身を除く): 33663530012

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 127, 130, 140, 169, 182, 254, 260, 338, 364, 455, 508, 635, 676, 845, 889, 910, 1183, 1270, 1651, 1690, 1778, 1820, 2366, 2540, 3302, 3380, 3556, 4445, 4732, 5915, 6604, 6917, 8255, 8890, 11557, 11830, 13834, 16510, 17780, 21463, 23114, 23660, 27668, 33020, 34585, 42926, 46228, 48419, 57785, 69170, 85852, 89921, 96838, 107315, 115570, 138340, 150241, 179842, 193676, 214630, 231140, 242095, 300482, 359684, 429260, 449605, 484190, 600964, 629447, 751205, 878459, 899210, 968380, 1168973, 1258894, 1502410, 1756918, 1798420, 2337946, 2517788, 3004820, 3147235, 3513836, 4392295, 4675892, 5844865, 6149213, 6294470, 8182811, 8784590, 11419967, 11689730, 12298426, 12588940, 16365622, 17569180, 22839934, 23379460, 24596852, 30746065, 32731244, 40914055, 45679868, 57099835, 61492130, 79939769, 81828110, 114199670, 122984260, 148459571, 159879538, 163656220, 228399340, 296919142, 319759076, 399698845, 593838284, 742297855, 799397690, 1039216997, 1484595710, 1598795380, 2078433994, 2969191420, 4156867988, 5196084985, 10392169970, 20784339940]

約数ペア:

[(1, 20784339940), (2, 10392169970), (4, 5196084985), (5, 4156867988), (7, 2969191420), (10, 2078433994), (13, 1598795380), (14, 1484595710), (20, 1039216997), (26, 799397690), (28, 742297855), (35, 593838284), (52, 399698845), (65, 319759076), (70, 296919142), (91, 228399340), (127, 163656220), (130, 159879538), (140, 148459571), (169, 122984260), (182, 114199670), (254, 81828110), (260, 79939769), (338, 61492130), (364, 57099835), (455, 45679868), (508, 40914055), (635, 32731244), (676, 30746065), (845, 24596852), (889, 23379460), (910, 22839934), (1183, 17569180), (1270, 16365622), (1651, 12588940), (1690, 12298426), (1778, 11689730), (1820, 11419967), (2366, 8784590), (2540, 8182811), (3302, 6294470), (3380, 6149213), (3556, 5844865), (4445, 4675892), (4732, 4392295), (5915, 3513836), (6604, 3147235), (6917, 3004820), (8255, 2517788), (8890, 2337946), (11557, 1798420), (11830, 1756918), (13834, 1502410), (16510, 1258894), (17780, 1168973), (21463, 968380), (23114, 899210), (23660, 878459), (27668, 751205), (33020, 629447), (34585, 600964), (42926, 484190), (46228, 449605), (48419, 429260), (57785, 359684), (69170, 300482), (85852, 242095), (89921, 231140), (96838, 214630), (107315, 193676), (115570, 179842), (138340, 150241)]