642068

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{997}}^1$

素因数の和:1031

約数の個数: 24

約数和(自身を含む): 1341312

約数和(自身を除く): 699244

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644, 997, 1994, 3988, 6979, 13958, 22931, 27916, 45862, 91724, 160517, 321034, 642068]

約数ペア:

[(1, 642068), (2, 321034), (4, 160517), (7, 91724), (14, 45862), (23, 27916), (28, 22931), (46, 13958), (92, 6979), (161, 3988), (322, 1994), (644, 997)]