19018888

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 42791040

約数和(自身を除く): 23772152

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 67, 74, 134, 137, 148, 259, 268, 274, 296, 469, 518, 536, 548, 938, 959, 1036, 1096, 1876, 1918, 2072, 2479, 3752, 3836, 4958, 5069, 7672, 9179, 9916, 10138, 17353, 18358, 19832, 20276, 34706, 35483, 36716, 40552, 64253, 69412, 70966, 73432, 128506, 138824, 141932, 257012, 283864, 339623, 514024, 679246, 1358492, 2377361, 2716984, 4754722, 9509444, 19018888]

約数ペア:

[(1, 19018888), (2, 9509444), (4, 4754722), (7, 2716984), (8, 2377361), (14, 1358492), (28, 679246), (37, 514024), (56, 339623), (67, 283864), (74, 257012), (134, 141932), (137, 138824), (148, 128506), (259, 73432), (268, 70966), (274, 69412), (296, 64253), (469, 40552), (518, 36716), (536, 35483), (548, 34706), (938, 20276), (959, 19832), (1036, 18358), (1096, 17353), (1876, 10138), (1918, 9916), (2072, 9179), (2479, 7672), (3752, 5069), (3836, 4958)]