16556800

素因数分解:

$2^8\times 5^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1$

素因数の和:238

約数の個数: 108

約数和(自身を含む): 44354800

約数和(自身を除く): 27798000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 128, 130, 160, 199, 200, 208, 256, 260, 320, 325, 398, 400, 416, 520, 640, 650, 796, 800, 832, 995, 1040, 1280, 1300, 1592, 1600, 1664, 1990, 2080, 2587, 2600, 3184, 3200, 3328, 3980, 4160, 4975, 5174, 5200, 6368, 6400, 7960, 8320, 9950, 10348, 10400, 12736, 12935, 15920, 16640, 19900, 20696, 20800, 25472, 25870, 31840, 39800, 41392, 41600, 50944, 51740, 63680, 64675, 79600, 82784, 83200, 103480, 127360, 129350, 159200, 165568, 206960, 254720, 258700, 318400, 331136, 413920, 517400, 636800, 662272, 827840, 1034800, 1273600, 1655680, 2069600, 3311360, 4139200, 8278400, 16556800]

約数ペア:

[(1, 16556800), (2, 8278400), (4, 4139200), (5, 3311360), (8, 2069600), (10, 1655680), (13, 1273600), (16, 1034800), (20, 827840), (25, 662272), (26, 636800), (32, 517400), (40, 413920), (50, 331136), (52, 318400), (64, 258700), (65, 254720), (80, 206960), (100, 165568), (104, 159200), (128, 129350), (130, 127360), (160, 103480), (199, 83200), (200, 82784), (208, 79600), (256, 64675), (260, 63680), (320, 51740), (325, 50944), (398, 41600), (400, 41392), (416, 39800), (520, 31840), (640, 25870), (650, 25472), (796, 20800), (800, 20696), (832, 19900), (995, 16640), (1040, 15920), (1280, 12935), (1300, 12736), (1592, 10400), (1600, 10348), (1664, 9950), (1990, 8320), (2080, 7960), (2587, 6400), (2600, 6368), (3184, 5200), (3200, 5174), (3328, 4975), (3980, 4160)]