64390400

素因数分解:

$2^8\times 5^2\times {\mathrm{10061}}^1$

素因数の和:10087

約数の個数: 54

約数和(自身を含む): 159392142

約数和(自身を除く): 95001742

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 6400, 10061, 20122, 40244, 50305, 80488, 100610, 160976, 201220, 251525, 321952, 402440, 503050, 643904, 804880, 1006100, 1287808, 1609760, 2012200, 2575616, 3219520, 4024400, 6439040, 8048800, 12878080, 16097600, 32195200, 64390400]

約数ペア:

[(1, 64390400), (2, 32195200), (4, 16097600), (5, 12878080), (8, 8048800), (10, 6439040), (16, 4024400), (20, 3219520), (25, 2575616), (32, 2012200), (40, 1609760), (50, 1287808), (64, 1006100), (80, 804880), (100, 643904), (128, 503050), (160, 402440), (200, 321952), (256, 251525), (320, 201220), (400, 160976), (640, 100610), (800, 80488), (1280, 50305), (1600, 40244), (3200, 20122), (6400, 10061)]