28891597

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{631}}^1$

素因数の和:880

約数の個数: 16

約数和(自身を含む): 34299904

約数和(自身を除く): 5408307

約数列:

[1, 7, 31, 211, 217, 631, 1477, 4417, 6541, 19561, 45787, 133141, 136927, 931987, 4127371, 28891597]

約数ペア:

[(1, 28891597), (7, 4127371), (31, 931987), (211, 136927), (217, 133141), (631, 45787), (1477, 19561), (4417, 6541)]