12793600

素因数分解:

$2^8\times 5^2\times {\mathrm{1999}}^1$

素因数の和:2025

約数の個数: 54

約数和(自身を含む): 31682000

約数和(自身を除く): 18888400

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, 1999, 3200, 3998, 6400, 7996, 9995, 15992, 19990, 31984, 39980, 49975, 63968, 79960, 99950, 127936, 159920, 199900, 255872, 319840, 399800, 511744, 639680, 799600, 1279360, 1599200, 2558720, 3198400, 6396800, 12793600]

約数ペア:

[(1, 12793600), (2, 6396800), (4, 3198400), (5, 2558720), (8, 1599200), (10, 1279360), (16, 799600), (20, 639680), (25, 511744), (32, 399800), (40, 319840), (50, 255872), (64, 199900), (80, 159920), (100, 127936), (128, 99950), (160, 79960), (200, 63968), (256, 49975), (320, 39980), (400, 31984), (640, 19990), (800, 15992), (1280, 9995), (1600, 7996), (1999, 6400), (3200, 3998)]