678551331

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:531

約数の個数: 32

約数和(自身を含む): 937018368

約数和(自身を除く): 258467037

約数列:

[1, 3, 71, 103, 157, 197, 213, 309, 471, 591, 7313, 11147, 13987, 16171, 20291, 21939, 30929, 33441, 41961, 48513, 60873, 92787, 1148141, 1440661, 2195959, 3185687, 3444423, 4321983, 6587877, 9557061, 226183777, 678551331]

約数ペア:

[(1, 678551331), (3, 226183777), (71, 9557061), (103, 6587877), (157, 4321983), (197, 3444423), (213, 3185687), (309, 2195959), (471, 1440661), (591, 1148141), (7313, 92787), (11147, 60873), (13987, 48513), (16171, 41961), (20291, 33441), (21939, 30929)]