399378

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:306

約数の個数: 32

約数和(自身を含む): 941184

約数和(自身を除く): 541806

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 74, 111, 222, 257, 259, 514, 518, 771, 777, 1542, 1554, 1799, 3598, 5397, 9509, 10794, 19018, 28527, 57054, 66563, 133126, 199689, 399378]

約数ペア:

[(1, 399378), (2, 199689), (3, 133126), (6, 66563), (7, 57054), (14, 28527), (21, 19018), (37, 10794), (42, 9509), (74, 5397), (111, 3598), (222, 1799), (257, 1554), (259, 1542), (514, 777), (518, 771)]