261639118

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1\times {\mathrm{523}}^1$

素因数の和:880

約数の個数: 32

約数和(自身を含む): 431004672

約数和(自身を除く): 169365554

約数列:

[1, 2, 13, 26, 71, 142, 271, 523, 542, 923, 1046, 1846, 3523, 6799, 7046, 13598, 19241, 37133, 38482, 74266, 141733, 250133, 283466, 482729, 500266, 965458, 1842529, 3685058, 10063043, 20126086, 130819559, 261639118]

約数ペア:

[(1, 261639118), (2, 130819559), (13, 20126086), (26, 10063043), (71, 3685058), (142, 1842529), (271, 965458), (523, 500266), (542, 482729), (923, 283466), (1046, 250133), (1846, 141733), (3523, 74266), (6799, 38482), (7046, 37133), (13598, 19241)]