19979200

素因数分解:

$2^6\times 5^2\times {\mathrm{12487}}^1$

素因数の和:12509

約数の個数: 42

約数和(自身を含む): 49165256

約数和(自身を除く): 29186056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 12487, 24974, 49948, 62435, 99896, 124870, 199792, 249740, 312175, 399584, 499480, 624350, 799168, 998960, 1248700, 1997920, 2497400, 3995840, 4994800, 9989600, 19979200]

約数ペア:

[(1, 19979200), (2, 9989600), (4, 4994800), (5, 3995840), (8, 2497400), (10, 1997920), (16, 1248700), (20, 998960), (25, 799168), (32, 624350), (40, 499480), (50, 399584), (64, 312175), (80, 249740), (100, 199792), (160, 124870), (200, 99896), (320, 62435), (400, 49948), (800, 24974), (1600, 12487)]