21939200

素因数分解:

$2^{10}\times 5^2\times {\mathrm{857}}^1$

素因数の和:887

約数の個数: 66

約数和(自身を含む): 54446106

約数和(自身を除く): 32506906

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 857, 1024, 1280, 1600, 1714, 2560, 3200, 3428, 4285, 5120, 6400, 6856, 8570, 12800, 13712, 17140, 21425, 25600, 27424, 34280, 42850, 54848, 68560, 85700, 109696, 137120, 171400, 219392, 274240, 342800, 438784, 548480, 685600, 877568, 1096960, 1371200, 2193920, 2742400, 4387840, 5484800, 10969600, 21939200]

約数ペア:

[(1, 21939200), (2, 10969600), (4, 5484800), (5, 4387840), (8, 2742400), (10, 2193920), (16, 1371200), (20, 1096960), (25, 877568), (32, 685600), (40, 548480), (50, 438784), (64, 342800), (80, 274240), (100, 219392), (128, 171400), (160, 137120), (200, 109696), (256, 85700), (320, 68560), (400, 54848), (512, 42850), (640, 34280), (800, 27424), (857, 25600), (1024, 21425), (1280, 17140), (1600, 13712), (1714, 12800), (2560, 8570), (3200, 6856), (3428, 6400), (4285, 5120)]