20145867736

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:449

約数の個数: 128

約数和(自身を含む): 40646707200

約数和(自身を除く): 20500839464

約数列:

[1, 2, 4, 8, 43, 53, 71, 79, 86, 106, 142, 158, 172, 197, 212, 284, 316, 344, 394, 424, 568, 632, 788, 1576, 2279, 3053, 3397, 3763, 4187, 4558, 5609, 6106, 6794, 7526, 8374, 8471, 9116, 10441, 11218, 12212, 13588, 13987, 15052, 15563, 16748, 16942, 18232, 20882, 22436, 24424, 27176, 27974, 30104, 31126, 33496, 33884, 41764, 44872, 55948, 62252, 67768, 83528, 111896, 124504, 161809, 180041, 241187, 297277, 323618, 360082, 448963, 482374, 594554, 601441, 647236, 669209, 720164, 741311, 824839, 897926, 964748, 1104973, 1189108, 1202882, 1294472, 1338418, 1440328, 1482622, 1649678, 1795852, 1929496, 2209946, 2378216, 2405764, 2676836, 2965244, 3299356, 3591704, 4419892, 4811528, 5353672, 5930488, 6598712, 8839784, 12782911, 25565822, 31876373, 35468077, 47513839, 51131644, 58563569, 63752746, 70936154, 95027678, 102263288, 117127138, 127505492, 141872308, 190055356, 234254276, 255010984, 283744616, 380110712, 468508552, 2518233467, 5036466934, 10072933868, 20145867736]

約数ペア:

[(1, 20145867736), (2, 10072933868), (4, 5036466934), (8, 2518233467), (43, 468508552), (53, 380110712), (71, 283744616), (79, 255010984), (86, 234254276), (106, 190055356), (142, 141872308), (158, 127505492), (172, 117127138), (197, 102263288), (212, 95027678), (284, 70936154), (316, 63752746), (344, 58563569), (394, 51131644), (424, 47513839), (568, 35468077), (632, 31876373), (788, 25565822), (1576, 12782911), (2279, 8839784), (3053, 6598712), (3397, 5930488), (3763, 5353672), (4187, 4811528), (4558, 4419892), (5609, 3591704), (6106, 3299356), (6794, 2965244), (7526, 2676836), (8374, 2405764), (8471, 2378216), (9116, 2209946), (10441, 1929496), (11218, 1795852), (12212, 1649678), (13588, 1482622), (13987, 1440328), (15052, 1338418), (15563, 1294472), (16748, 1202882), (16942, 1189108), (18232, 1104973), (20882, 964748), (22436, 897926), (24424, 824839), (27176, 741311), (27974, 720164), (30104, 669209), (31126, 647236), (33496, 601441), (33884, 594554), (41764, 482374), (44872, 448963), (55948, 360082), (62252, 323618), (67768, 297277), (83528, 241187), (111896, 180041), (124504, 161809)]