21332800

素因数分解:

$2^6\times 5^2\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:288

約数の個数: 84

約数和(自身を含む): 53543200

約数和(自身を除く): 32210400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 67, 80, 100, 134, 160, 199, 200, 268, 320, 335, 398, 400, 536, 670, 796, 800, 995, 1072, 1340, 1592, 1600, 1675, 1990, 2144, 2680, 3184, 3350, 3980, 4288, 4975, 5360, 6368, 6700, 7960, 9950, 10720, 12736, 13333, 13400, 15920, 19900, 21440, 26666, 26800, 31840, 39800, 53332, 53600, 63680, 66665, 79600, 106664, 107200, 133330, 159200, 213328, 266660, 318400, 333325, 426656, 533320, 666650, 853312, 1066640, 1333300, 2133280, 2666600, 4266560, 5333200, 10666400, 21332800]

約数ペア:

[(1, 21332800), (2, 10666400), (4, 5333200), (5, 4266560), (8, 2666600), (10, 2133280), (16, 1333300), (20, 1066640), (25, 853312), (32, 666650), (40, 533320), (50, 426656), (64, 333325), (67, 318400), (80, 266660), (100, 213328), (134, 159200), (160, 133330), (199, 107200), (200, 106664), (268, 79600), (320, 66665), (335, 63680), (398, 53600), (400, 53332), (536, 39800), (670, 31840), (796, 26800), (800, 26666), (995, 21440), (1072, 19900), (1340, 15920), (1592, 13400), (1600, 13333), (1675, 12736), (1990, 10720), (2144, 9950), (2680, 7960), (3184, 6700), (3350, 6368), (3980, 5360), (4288, 4975)]