3986990080

素因数分解:

$2^{10}\times 5^1\times {\mathrm{778709}}^1$

素因数の和:778734

約数の個数: 44

約数和(自身を含む): 9564116220

約数和(自身を除く): 5577126140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 778709, 1557418, 3114836, 3893545, 6229672, 7787090, 12459344, 15574180, 24918688, 31148360, 49837376, 62296720, 99674752, 124593440, 199349504, 249186880, 398699008, 498373760, 797398016, 996747520, 1993495040, 3986990080]

約数ペア:

[(1, 3986990080), (2, 1993495040), (4, 996747520), (5, 797398016), (8, 498373760), (10, 398699008), (16, 249186880), (20, 199349504), (32, 124593440), (40, 99674752), (64, 62296720), (80, 49837376), (128, 31148360), (160, 24918688), (256, 15574180), (320, 12459344), (512, 7787090), (640, 6229672), (1024, 3893545), (1280, 3114836), (2560, 1557418), (5120, 778709)]