140235728

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{317}}^1\times {\mathrm{643}}^1$

素因数の和:1011

約数の個数: 40

約数和(自身を含む): 279336288

約数和(自身を除く): 139100560

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 317, 344, 634, 643, 688, 1268, 1286, 2536, 2572, 5072, 5144, 10288, 13631, 27262, 27649, 54524, 55298, 109048, 110596, 203831, 218096, 221192, 407662, 442384, 815324, 1630648, 3261296, 8764733, 17529466, 35058932, 70117864, 140235728]

約数ペア:

[(1, 140235728), (2, 70117864), (4, 35058932), (8, 17529466), (16, 8764733), (43, 3261296), (86, 1630648), (172, 815324), (317, 442384), (344, 407662), (634, 221192), (643, 218096), (688, 203831), (1268, 110596), (1286, 109048), (2536, 55298), (2572, 54524), (5072, 27649), (5144, 27262), (10288, 13631)]