13281280

素因数分解:

$2^{11}\times 5^1\times {\mathrm{1297}}^1$

素因数の和:1324

約数の個数: 48

約数和(自身を含む): 31891860

約数和(自身を除く): 18610580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 1297, 2048, 2560, 2594, 5120, 5188, 6485, 10240, 10376, 12970, 20752, 25940, 41504, 51880, 83008, 103760, 166016, 207520, 332032, 415040, 664064, 830080, 1328128, 1660160, 2656256, 3320320, 6640640, 13281280]

約数ペア:

[(1, 13281280), (2, 6640640), (4, 3320320), (5, 2656256), (8, 1660160), (10, 1328128), (16, 830080), (20, 664064), (32, 415040), (40, 332032), (64, 207520), (80, 166016), (128, 103760), (160, 83008), (256, 51880), (320, 41504), (512, 25940), (640, 20752), (1024, 12970), (1280, 10376), (1297, 10240), (2048, 6485), (2560, 5188), (2594, 5120)]