18639860

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{25189}}^1$

素因数の和:25235

約数の個数: 24

約数和(自身を含む): 40203240

約数和(自身を除く): 21563380

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 25189, 50378, 100756, 125945, 251890, 503780, 931993, 1863986, 3727972, 4659965, 9319930, 18639860]

約数ペア:

[(1, 18639860), (2, 9319930), (4, 4659965), (5, 3727972), (10, 1863986), (20, 931993), (37, 503780), (74, 251890), (148, 125945), (185, 100756), (370, 50378), (740, 25189)]