20187799216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{359}}^1\times {\mathrm{5101}}^1$

素因数の和:5534

約数の個数: 80

約数和(自身を含む): 43045369920

約数和(自身を除く): 22857570704

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 104, 106, 208, 212, 359, 424, 689, 718, 848, 1378, 1436, 2756, 2872, 4667, 5101, 5512, 5744, 9334, 10202, 11024, 18668, 19027, 20404, 37336, 38054, 40808, 66313, 74672, 76108, 81616, 132626, 152216, 247351, 265252, 270353, 304432, 494702, 530504, 540706, 989404, 1061008, 1081412, 1831259, 1978808, 2162824, 3514589, 3662518, 3957616, 4325648, 7029178, 7325036, 14058356, 14650072, 23806367, 28116712, 29300144, 47612734, 56233424, 95225468, 97056727, 190450936, 194113454, 380901872, 388226908, 776453816, 1261737451, 1552907632, 2523474902, 5046949804, 10093899608, 20187799216]

約数ペア:

[(1, 20187799216), (2, 10093899608), (4, 5046949804), (8, 2523474902), (13, 1552907632), (16, 1261737451), (26, 776453816), (52, 388226908), (53, 380901872), (104, 194113454), (106, 190450936), (208, 97056727), (212, 95225468), (359, 56233424), (424, 47612734), (689, 29300144), (718, 28116712), (848, 23806367), (1378, 14650072), (1436, 14058356), (2756, 7325036), (2872, 7029178), (4667, 4325648), (5101, 3957616), (5512, 3662518), (5744, 3514589), (9334, 2162824), (10202, 1978808), (11024, 1831259), (18668, 1081412), (19027, 1061008), (20404, 989404), (37336, 540706), (38054, 530504), (40808, 494702), (66313, 304432), (74672, 270353), (76108, 265252), (81616, 247351), (132626, 152216)]