640057914

素因数分解:

$2^1\times 3^2\times {\mathrm{157}}^1\times {\mathrm{293}}^1\times {\mathrm{773}}^1$

素因数の和:1231

約数の個数: 48

約数和(自身を含む): 1402200072

約数和(自身を除く): 762142158

約数列:

[1, 2, 3, 6, 9, 18, 157, 293, 314, 471, 586, 773, 879, 942, 1413, 1546, 1758, 2319, 2637, 2826, 4638, 5274, 6957, 13914, 46001, 92002, 121361, 138003, 226489, 242722, 276006, 364083, 414009, 452978, 679467, 728166, 828018, 1092249, 1358934, 2038401, 2184498, 4076802, 35558773, 71117546, 106676319, 213352638, 320028957, 640057914]

約数ペア:

[(1, 640057914), (2, 320028957), (3, 213352638), (6, 106676319), (9, 71117546), (18, 35558773), (157, 4076802), (293, 2184498), (314, 2038401), (471, 1358934), (586, 1092249), (773, 828018), (879, 728166), (942, 679467), (1413, 452978), (1546, 414009), (1758, 364083), (2319, 276006), (2637, 242722), (2826, 226489), (4638, 138003), (5274, 121361), (6957, 92002), (13914, 46001)]