21387200

素因数分解:

$2^6\times 5^2\times {\mathrm{13367}}^1$

素因数の和:13389

約数の個数: 42

約数和(自身を含む): 52629816

約数和(自身を除く): 31242616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 13367, 26734, 53468, 66835, 106936, 133670, 213872, 267340, 334175, 427744, 534680, 668350, 855488, 1069360, 1336700, 2138720, 2673400, 4277440, 5346800, 10693600, 21387200]

約数ペア:

[(1, 21387200), (2, 10693600), (4, 5346800), (5, 4277440), (8, 2673400), (10, 2138720), (16, 1336700), (20, 1069360), (25, 855488), (32, 668350), (40, 534680), (50, 427744), (64, 334175), (80, 267340), (100, 213872), (160, 133670), (200, 106936), (320, 66835), (400, 53468), (800, 26734), (1600, 13367)]