12870400

素因数分解:

$2^8\times 5^2\times {\mathrm{2011}}^1$

素因数の和:2037

約数の個数: 54

約数和(自身を含む): 31872092

約数和(自身を除く): 19001692

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, 2011, 3200, 4022, 6400, 8044, 10055, 16088, 20110, 32176, 40220, 50275, 64352, 80440, 100550, 128704, 160880, 201100, 257408, 321760, 402200, 514816, 643520, 804400, 1287040, 1608800, 2574080, 3217600, 6435200, 12870400]

約数ペア:

[(1, 12870400), (2, 6435200), (4, 3217600), (5, 2574080), (8, 1608800), (10, 1287040), (16, 804400), (20, 643520), (25, 514816), (32, 402200), (40, 321760), (50, 257408), (64, 201100), (80, 160880), (100, 128704), (128, 100550), (160, 80440), (200, 64352), (256, 50275), (320, 40220), (400, 32176), (640, 20110), (800, 16088), (1280, 10055), (1600, 8044), (2011, 6400), (3200, 4022)]