81493984

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1619}}^1$

素因数の和:1664

約数の個数: 72

約数和(自身を含む): 190035720

約数和(自身を除く): 108541736

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 88, 104, 121, 143, 176, 208, 242, 286, 352, 416, 484, 572, 968, 1144, 1573, 1619, 1936, 2288, 3146, 3238, 3872, 4576, 6292, 6476, 12584, 12952, 17809, 21047, 25168, 25904, 35618, 42094, 50336, 51808, 71236, 84188, 142472, 168376, 195899, 231517, 284944, 336752, 391798, 463034, 569888, 673504, 783596, 926068, 1567192, 1852136, 2546687, 3134384, 3704272, 5093374, 6268768, 7408544, 10186748, 20373496, 40746992, 81493984]

約数ペア:

[(1, 81493984), (2, 40746992), (4, 20373496), (8, 10186748), (11, 7408544), (13, 6268768), (16, 5093374), (22, 3704272), (26, 3134384), (32, 2546687), (44, 1852136), (52, 1567192), (88, 926068), (104, 783596), (121, 673504), (143, 569888), (176, 463034), (208, 391798), (242, 336752), (286, 284944), (352, 231517), (416, 195899), (484, 168376), (572, 142472), (968, 84188), (1144, 71236), (1573, 51808), (1619, 50336), (1936, 42094), (2288, 35618), (3146, 25904), (3238, 25168), (3872, 21047), (4576, 17809), (6292, 12952), (6476, 12584)]