168389740

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{77243}}^1$

素因数の和:77361

約数の個数: 24

約数和(自身を含む): 356867280

約数和(自身を除く): 188477540

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 77243, 154486, 308972, 386215, 772430, 1544860, 8419487, 16838974, 33677948, 42097435, 84194870, 168389740]

約数ペア:

[(1, 168389740), (2, 84194870), (4, 42097435), (5, 33677948), (10, 16838974), (20, 8419487), (109, 1544860), (218, 772430), (436, 386215), (545, 308972), (1090, 154486), (2180, 77243)]