21006987196

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1\times {\mathrm{347}}^1$

素因数の和:683

約数の個数: 96

約数和(自身を含む): 40859320320

約数和(自身を除く): 19852333124

約数列:

[1, 2, 4, 13, 26, 52, 89, 103, 127, 178, 206, 254, 347, 356, 412, 508, 694, 1157, 1339, 1388, 1651, 2314, 2678, 3302, 4511, 4628, 5356, 6604, 9022, 9167, 11303, 13081, 18044, 18334, 22606, 26162, 30883, 35741, 36668, 44069, 45212, 52324, 61766, 71482, 88138, 119171, 123532, 142964, 146939, 170053, 176276, 238342, 293878, 340106, 401479, 464633, 476684, 572897, 587756, 680212, 802958, 929266, 1145794, 1164209, 1605916, 1858532, 2291588, 2328418, 3180949, 3922141, 4539107, 4656836, 6361898, 7844282, 9078214, 12723796, 15134717, 15688564, 18156428, 30269434, 41352337, 50987833, 59008391, 60538868, 82704674, 101975666, 118016782, 165409348, 203951332, 236033564, 403980523, 807961046, 1615922092, 5251746799, 10503493598, 21006987196]

約数ペア:

[(1, 21006987196), (2, 10503493598), (4, 5251746799), (13, 1615922092), (26, 807961046), (52, 403980523), (89, 236033564), (103, 203951332), (127, 165409348), (178, 118016782), (206, 101975666), (254, 82704674), (347, 60538868), (356, 59008391), (412, 50987833), (508, 41352337), (694, 30269434), (1157, 18156428), (1339, 15688564), (1388, 15134717), (1651, 12723796), (2314, 9078214), (2678, 7844282), (3302, 6361898), (4511, 4656836), (4628, 4539107), (5356, 3922141), (6604, 3180949), (9022, 2328418), (9167, 2291588), (11303, 1858532), (13081, 1605916), (18044, 1164209), (18334, 1145794), (22606, 929266), (26162, 802958), (30883, 680212), (35741, 587756), (36668, 572897), (44069, 476684), (45212, 464633), (52324, 401479), (61766, 340106), (71482, 293878), (88138, 238342), (119171, 176276), (123532, 170053), (142964, 146939)]