81233656

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{20431}}^1$

素因数の和:20515

約数の個数: 32

約数和(自身を含む): 176532480

約数和(自身を除く): 95298824

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 20431, 40862, 81724, 143017, 163448, 286034, 572068, 1144136, 1450601, 2901202, 5802404, 10154207, 11604808, 20308414, 40616828, 81233656]

約数ペア:

[(1, 81233656), (2, 40616828), (4, 20308414), (7, 11604808), (8, 10154207), (14, 5802404), (28, 2901202), (56, 1450601), (71, 1144136), (142, 572068), (284, 286034), (497, 163448), (568, 143017), (994, 81724), (1988, 40862), (3976, 20431)]