81510400

素因数分解:

$2^{14}\times 5^2\times {\mathrm{199}}^1$

素因数の和:237

約数の個数: 90

約数和(自身を含む): 203155400

約数和(自身を除く): 121645000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 199, 200, 256, 320, 398, 400, 512, 640, 796, 800, 995, 1024, 1280, 1592, 1600, 1990, 2048, 2560, 3184, 3200, 3980, 4096, 4975, 5120, 6368, 6400, 7960, 8192, 9950, 10240, 12736, 12800, 15920, 16384, 19900, 20480, 25472, 25600, 31840, 39800, 40960, 50944, 51200, 63680, 79600, 81920, 101888, 102400, 127360, 159200, 203776, 204800, 254720, 318400, 407552, 409600, 509440, 636800, 815104, 1018880, 1273600, 1630208, 2037760, 2547200, 3260416, 4075520, 5094400, 8151040, 10188800, 16302080, 20377600, 40755200, 81510400]

約数ペア:

[(1, 81510400), (2, 40755200), (4, 20377600), (5, 16302080), (8, 10188800), (10, 8151040), (16, 5094400), (20, 4075520), (25, 3260416), (32, 2547200), (40, 2037760), (50, 1630208), (64, 1273600), (80, 1018880), (100, 815104), (128, 636800), (160, 509440), (199, 409600), (200, 407552), (256, 318400), (320, 254720), (398, 204800), (400, 203776), (512, 159200), (640, 127360), (796, 102400), (800, 101888), (995, 81920), (1024, 79600), (1280, 63680), (1592, 51200), (1600, 50944), (1990, 40960), (2048, 39800), (2560, 31840), (3184, 25600), (3200, 25472), (3980, 20480), (4096, 19900), (4975, 16384), (5120, 15920), (6368, 12800), (6400, 12736), (7960, 10240), (8192, 9950)]