20162800

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:423

約数の個数: 120

約数和(自身を含む): 58428800

約数和(自身を除く): 38266000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 25, 28, 35, 38, 40, 50, 56, 70, 76, 80, 95, 100, 112, 133, 140, 152, 175, 190, 200, 266, 280, 304, 350, 379, 380, 400, 475, 532, 560, 665, 700, 758, 760, 950, 1064, 1330, 1400, 1516, 1520, 1895, 1900, 2128, 2653, 2660, 2800, 3032, 3325, 3790, 3800, 5306, 5320, 6064, 6650, 7201, 7580, 7600, 9475, 10612, 10640, 13265, 13300, 14402, 15160, 18950, 21224, 26530, 26600, 28804, 30320, 36005, 37900, 42448, 50407, 53060, 53200, 57608, 66325, 72010, 75800, 100814, 106120, 115216, 132650, 144020, 151600, 180025, 201628, 212240, 252035, 265300, 288040, 360050, 403256, 504070, 530600, 576080, 720100, 806512, 1008140, 1061200, 1260175, 1440200, 2016280, 2520350, 2880400, 4032560, 5040700, 10081400, 20162800]

約数ペア:

[(1, 20162800), (2, 10081400), (4, 5040700), (5, 4032560), (7, 2880400), (8, 2520350), (10, 2016280), (14, 1440200), (16, 1260175), (19, 1061200), (20, 1008140), (25, 806512), (28, 720100), (35, 576080), (38, 530600), (40, 504070), (50, 403256), (56, 360050), (70, 288040), (76, 265300), (80, 252035), (95, 212240), (100, 201628), (112, 180025), (133, 151600), (140, 144020), (152, 132650), (175, 115216), (190, 106120), (200, 100814), (266, 75800), (280, 72010), (304, 66325), (350, 57608), (379, 53200), (380, 53060), (400, 50407), (475, 42448), (532, 37900), (560, 36005), (665, 30320), (700, 28804), (758, 26600), (760, 26530), (950, 21224), (1064, 18950), (1330, 15160), (1400, 14402), (1516, 13300), (1520, 13265), (1895, 10640), (1900, 10612), (2128, 9475), (2653, 7600), (2660, 7580), (2800, 7201), (3032, 6650), (3325, 6064), (3790, 5320), (3800, 5306)]