389617921

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{541}}^1$

素因数の和:805

約数の個数: 32

約数和(自身を含む): 499507200

約数和(自身を除く): 109889279

約数列:

[1, 7, 11, 47, 77, 199, 329, 517, 541, 1393, 2189, 3619, 3787, 5951, 9353, 15323, 25427, 41657, 65471, 102883, 107659, 177989, 279697, 720181, 753613, 1184249, 1957879, 5059973, 8289743, 35419811, 55659703, 389617921]

約数ペア:

[(1, 389617921), (7, 55659703), (11, 35419811), (47, 8289743), (77, 5059973), (199, 1957879), (329, 1184249), (517, 753613), (541, 720181), (1393, 279697), (2189, 177989), (3619, 107659), (3787, 102883), (5951, 65471), (9353, 41657), (15323, 25427)]