16390400

素因数分解:

$2^8\times 5^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1$

素因数の和:236

約数の個数: 108

約数和(自身を含む): 43911252

約数和(自身を除く): 27520852

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, 197, 200, 208, 256, 260, 320, 325, 394, 400, 416, 520, 640, 650, 788, 800, 832, 985, 1040, 1280, 1300, 1576, 1600, 1664, 1970, 2080, 2561, 2600, 3152, 3200, 3328, 3940, 4160, 4925, 5122, 5200, 6304, 6400, 7880, 8320, 9850, 10244, 10400, 12608, 12805, 15760, 16640, 19700, 20488, 20800, 25216, 25610, 31520, 39400, 40976, 41600, 50432, 51220, 63040, 64025, 78800, 81952, 83200, 102440, 126080, 128050, 157600, 163904, 204880, 252160, 256100, 315200, 327808, 409760, 512200, 630400, 655616, 819520, 1024400, 1260800, 1639040, 2048800, 3278080, 4097600, 8195200, 16390400]

約数ペア:

[(1, 16390400), (2, 8195200), (4, 4097600), (5, 3278080), (8, 2048800), (10, 1639040), (13, 1260800), (16, 1024400), (20, 819520), (25, 655616), (26, 630400), (32, 512200), (40, 409760), (50, 327808), (52, 315200), (64, 256100), (65, 252160), (80, 204880), (100, 163904), (104, 157600), (128, 128050), (130, 126080), (160, 102440), (197, 83200), (200, 81952), (208, 78800), (256, 64025), (260, 63040), (320, 51220), (325, 50432), (394, 41600), (400, 40976), (416, 39400), (520, 31520), (640, 25610), (650, 25216), (788, 20800), (800, 20488), (832, 19700), (985, 16640), (1040, 15760), (1280, 12805), (1300, 12608), (1576, 10400), (1600, 10244), (1664, 9850), (1970, 8320), (2080, 7880), (2561, 6400), (2600, 6304), (3152, 5200), (3200, 5122), (3328, 4925), (3940, 4160)]