81444800

素因数分解:

$2^6\times 5^2\times {\mathrm{109}}^1\times {\mathrm{467}}^1$

素因数の和:598

約数の個数: 84

約数和(自身を含む): 202676760

約数和(自身を除く): 121231960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 109, 160, 200, 218, 320, 400, 436, 467, 545, 800, 872, 934, 1090, 1600, 1744, 1868, 2180, 2335, 2725, 3488, 3736, 4360, 4670, 5450, 6976, 7472, 8720, 9340, 10900, 11675, 14944, 17440, 18680, 21800, 23350, 29888, 34880, 37360, 43600, 46700, 50903, 74720, 87200, 93400, 101806, 149440, 174400, 186800, 203612, 254515, 373600, 407224, 509030, 747200, 814448, 1018060, 1272575, 1628896, 2036120, 2545150, 3257792, 4072240, 5090300, 8144480, 10180600, 16288960, 20361200, 40722400, 81444800]

約数ペア:

[(1, 81444800), (2, 40722400), (4, 20361200), (5, 16288960), (8, 10180600), (10, 8144480), (16, 5090300), (20, 4072240), (25, 3257792), (32, 2545150), (40, 2036120), (50, 1628896), (64, 1272575), (80, 1018060), (100, 814448), (109, 747200), (160, 509030), (200, 407224), (218, 373600), (320, 254515), (400, 203612), (436, 186800), (467, 174400), (545, 149440), (800, 101806), (872, 93400), (934, 87200), (1090, 74720), (1600, 50903), (1744, 46700), (1868, 43600), (2180, 37360), (2335, 34880), (2725, 29888), (3488, 23350), (3736, 21800), (4360, 18680), (4670, 17440), (5450, 14944), (6976, 11675), (7472, 10900), (8720, 9340)]