21184000

素因数分解:

$2^9\times 5^3\times {\mathrm{331}}^1$

素因数の和:364

約数の個数: 80

約数和(自身を含む): 52983216

約数和(自身を除く): 31799216

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, 331, 400, 500, 512, 640, 662, 800, 1000, 1280, 1324, 1600, 1655, 2000, 2560, 2648, 3200, 3310, 4000, 5296, 6400, 6620, 8000, 8275, 10592, 12800, 13240, 16000, 16550, 21184, 26480, 32000, 33100, 41375, 42368, 52960, 64000, 66200, 82750, 84736, 105920, 132400, 165500, 169472, 211840, 264800, 331000, 423680, 529600, 662000, 847360, 1059200, 1324000, 2118400, 2648000, 4236800, 5296000, 10592000, 21184000]

約数ペア:

[(1, 21184000), (2, 10592000), (4, 5296000), (5, 4236800), (8, 2648000), (10, 2118400), (16, 1324000), (20, 1059200), (25, 847360), (32, 662000), (40, 529600), (50, 423680), (64, 331000), (80, 264800), (100, 211840), (125, 169472), (128, 165500), (160, 132400), (200, 105920), (250, 84736), (256, 82750), (320, 66200), (331, 64000), (400, 52960), (500, 42368), (512, 41375), (640, 33100), (662, 32000), (800, 26480), (1000, 21184), (1280, 16550), (1324, 16000), (1600, 13240), (1655, 12800), (2000, 10592), (2560, 8275), (2648, 8000), (3200, 6620), (3310, 6400), (4000, 5296)]