665812

素因数分解:

$2^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:140

約数の個数: 36

約数和(自身を含む): 1404480

約数和(自身を除く): 738668

約数列:

[1, 2, 4, 7, 14, 28, 43, 49, 79, 86, 98, 158, 172, 196, 301, 316, 553, 602, 1106, 1204, 2107, 2212, 3397, 3871, 4214, 6794, 7742, 8428, 13588, 15484, 23779, 47558, 95116, 166453, 332906, 665812]

約数ペア:

[(1, 665812), (2, 332906), (4, 166453), (7, 95116), (14, 47558), (28, 23779), (43, 15484), (49, 13588), (79, 8428), (86, 7742), (98, 6794), (158, 4214), (172, 3871), (196, 3397), (301, 2212), (316, 2107), (553, 1204), (602, 1106)]