20896000

素因数分解:

$2^8\times 5^3\times {\mathrm{653}}^1$

素因数の和:684

約数の個数: 72

約数和(自身を含む): 52134264

約数和(自身を除く): 31238264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 640, 653, 800, 1000, 1280, 1306, 1600, 2000, 2612, 3200, 3265, 4000, 5224, 6400, 6530, 8000, 10448, 13060, 16000, 16325, 20896, 26120, 32000, 32650, 41792, 52240, 65300, 81625, 83584, 104480, 130600, 163250, 167168, 208960, 261200, 326500, 417920, 522400, 653000, 835840, 1044800, 1306000, 2089600, 2612000, 4179200, 5224000, 10448000, 20896000]

約数ペア:

[(1, 20896000), (2, 10448000), (4, 5224000), (5, 4179200), (8, 2612000), (10, 2089600), (16, 1306000), (20, 1044800), (25, 835840), (32, 653000), (40, 522400), (50, 417920), (64, 326500), (80, 261200), (100, 208960), (125, 167168), (128, 163250), (160, 130600), (200, 104480), (250, 83584), (256, 81625), (320, 65300), (400, 52240), (500, 41792), (640, 32650), (653, 32000), (800, 26120), (1000, 20896), (1280, 16325), (1306, 16000), (1600, 13060), (2000, 10448), (2612, 8000), (3200, 6530), (3265, 6400), (4000, 5224)]