13127680

素因数分解:

$2^{12}\times 5^1\times {\mathrm{641}}^1$

素因数の和:670

約数の個数: 52

約数和(自身を含む): 31551732

約数和(自身を除く): 18424052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 641, 1024, 1280, 1282, 2048, 2560, 2564, 3205, 4096, 5120, 5128, 6410, 10240, 10256, 12820, 20480, 20512, 25640, 41024, 51280, 82048, 102560, 164096, 205120, 328192, 410240, 656384, 820480, 1312768, 1640960, 2625536, 3281920, 6563840, 13127680]

約数ペア:

[(1, 13127680), (2, 6563840), (4, 3281920), (5, 2625536), (8, 1640960), (10, 1312768), (16, 820480), (20, 656384), (32, 410240), (40, 328192), (64, 205120), (80, 164096), (128, 102560), (160, 82048), (256, 51280), (320, 41024), (512, 25640), (640, 20512), (641, 20480), (1024, 12820), (1280, 10256), (1282, 10240), (2048, 6410), (2560, 5128), (2564, 5120), (3205, 4096)]