261565913

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{2311}}^1$

素因数の和:2397

約数の個数: 32

約数和(自身を含む): 337367040

約数和(自身を除く): 75801127

約数列:

[1, 7, 19, 23, 37, 133, 161, 259, 437, 703, 851, 2311, 3059, 4921, 5957, 16169, 16177, 43909, 53153, 85507, 113183, 307363, 372071, 598549, 1009907, 1624633, 1966661, 7069349, 11372431, 13766627, 37366559, 261565913]

約数ペア:

[(1, 261565913), (7, 37366559), (19, 13766627), (23, 11372431), (37, 7069349), (133, 1966661), (161, 1624633), (259, 1009907), (437, 598549), (703, 372071), (851, 307363), (2311, 113183), (3059, 85507), (4921, 53153), (5957, 43909), (16169, 16177)]