21042400

素因数分解:

$2^5\times 5^2\times {\mathrm{29}}^1\times {\mathrm{907}}^1$

素因数の和:956

約数の個数: 72

約数和(自身を含む): 53199720

約数和(自身を除く): 32157320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 32, 40, 50, 58, 80, 100, 116, 145, 160, 200, 232, 290, 400, 464, 580, 725, 800, 907, 928, 1160, 1450, 1814, 2320, 2900, 3628, 4535, 4640, 5800, 7256, 9070, 11600, 14512, 18140, 22675, 23200, 26303, 29024, 36280, 45350, 52606, 72560, 90700, 105212, 131515, 145120, 181400, 210424, 263030, 362800, 420848, 526060, 657575, 725600, 841696, 1052120, 1315150, 2104240, 2630300, 4208480, 5260600, 10521200, 21042400]

約数ペア:

[(1, 21042400), (2, 10521200), (4, 5260600), (5, 4208480), (8, 2630300), (10, 2104240), (16, 1315150), (20, 1052120), (25, 841696), (29, 725600), (32, 657575), (40, 526060), (50, 420848), (58, 362800), (80, 263030), (100, 210424), (116, 181400), (145, 145120), (160, 131515), (200, 105212), (232, 90700), (290, 72560), (400, 52606), (464, 45350), (580, 36280), (725, 29024), (800, 26303), (907, 23200), (928, 22675), (1160, 18140), (1450, 14512), (1814, 11600), (2320, 9070), (2900, 7256), (3628, 5800), (4535, 4640)]