261597987

素因数分解:

$3^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{151}}^1\times {\mathrm{257}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 440474112

約数和(自身を除く): 178876125

約数列:

[1, 3, 7, 9, 21, 63, 107, 151, 257, 321, 453, 749, 771, 963, 1057, 1359, 1799, 2247, 2313, 3171, 5397, 6741, 9513, 16157, 16191, 27499, 38807, 48471, 82497, 113099, 116421, 145413, 192493, 247491, 271649, 339297, 349263, 577479, 814947, 1017891, 1732437, 2444841, 4152349, 12457047, 29066443, 37371141, 87199329, 261597987]

約数ペア:

[(1, 261597987), (3, 87199329), (7, 37371141), (9, 29066443), (21, 12457047), (63, 4152349), (107, 2444841), (151, 1732437), (257, 1017891), (321, 814947), (453, 577479), (749, 349263), (771, 339297), (963, 271649), (1057, 247491), (1359, 192493), (1799, 145413), (2247, 116421), (2313, 113099), (3171, 82497), (5397, 48471), (6741, 38807), (9513, 27499), (16157, 16191)]