18688940

素因数分解:

$2^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{2027}}^1$

素因数の和:2497

約数の個数: 24

約数和(自身を含む): 39351312

約数和(自身を除く): 20662372

約数列:

[1, 2, 4, 5, 10, 20, 461, 922, 1844, 2027, 2305, 4054, 4610, 8108, 9220, 10135, 20270, 40540, 934447, 1868894, 3737788, 4672235, 9344470, 18688940]

約数ペア:

[(1, 18688940), (2, 9344470), (4, 4672235), (5, 3737788), (10, 1868894), (20, 934447), (461, 40540), (922, 20270), (1844, 10135), (2027, 9220), (2305, 8108), (4054, 4610)]