81448000

素因数分解:

$2^6\times 5^3\times {\mathrm{10181}}^1$

素因数の和:10208

約数の個数: 56

約数和(自身を含む): 201725784

約数和(自身を除く): 120277784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 800, 1000, 1600, 2000, 4000, 8000, 10181, 20362, 40724, 50905, 81448, 101810, 162896, 203620, 254525, 325792, 407240, 509050, 651584, 814480, 1018100, 1272625, 1628960, 2036200, 2545250, 3257920, 4072400, 5090500, 8144800, 10181000, 16289600, 20362000, 40724000, 81448000]

約数ペア:

[(1, 81448000), (2, 40724000), (4, 20362000), (5, 16289600), (8, 10181000), (10, 8144800), (16, 5090500), (20, 4072400), (25, 3257920), (32, 2545250), (40, 2036200), (50, 1628960), (64, 1272625), (80, 1018100), (100, 814480), (125, 651584), (160, 509050), (200, 407240), (250, 325792), (320, 254525), (400, 203620), (500, 162896), (800, 101810), (1000, 81448), (1600, 50905), (2000, 40724), (4000, 20362), (8000, 10181)]