19994680

素因数分解:

$2^3\times 5^1\times {\mathrm{419}}^1\times {\mathrm{1193}}^1$

素因数の和:1623

約数の個数: 32

約数和(自身を含む): 45133200

約数和(自身を除く): 25138520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 419, 838, 1193, 1676, 2095, 2386, 3352, 4190, 4772, 5965, 8380, 9544, 11930, 16760, 23860, 47720, 499867, 999734, 1999468, 2499335, 3998936, 4998670, 9997340, 19994680]

約数ペア:

[(1, 19994680), (2, 9997340), (4, 4998670), (5, 3998936), (8, 2499335), (10, 1999468), (20, 999734), (40, 499867), (419, 47720), (838, 23860), (1193, 16760), (1676, 11930), (2095, 9544), (2386, 8380), (3352, 5965), (4190, 4772)]