18019408

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2381}}^1$

素因数の和:2443

約数の個数: 40

約数和(自身を含む): 38988576

約数和(自身を除く): 20969168

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 86, 88, 172, 176, 344, 473, 688, 946, 1892, 2381, 3784, 4762, 7568, 9524, 19048, 26191, 38096, 52382, 102383, 104764, 204766, 209528, 409532, 419056, 819064, 1126213, 1638128, 2252426, 4504852, 9009704, 18019408]

約数ペア:

[(1, 18019408), (2, 9009704), (4, 4504852), (8, 2252426), (11, 1638128), (16, 1126213), (22, 819064), (43, 419056), (44, 409532), (86, 209528), (88, 204766), (172, 104764), (176, 102383), (344, 52382), (473, 38096), (688, 26191), (946, 19048), (1892, 9524), (2381, 7568), (3784, 4762)]