4321280

素因数分解:

$2^{12}\times 5^1\times {\mathrm{211}}^1$

素因数の和:240

約数の個数: 52

約数和(自身を含む): 10418952

約数和(自身を除く): 6097672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 211, 256, 320, 422, 512, 640, 844, 1024, 1055, 1280, 1688, 2048, 2110, 2560, 3376, 4096, 4220, 5120, 6752, 8440, 10240, 13504, 16880, 20480, 27008, 33760, 54016, 67520, 108032, 135040, 216064, 270080, 432128, 540160, 864256, 1080320, 2160640, 4321280]

約数ペア:

[(1, 4321280), (2, 2160640), (4, 1080320), (5, 864256), (8, 540160), (10, 432128), (16, 270080), (20, 216064), (32, 135040), (40, 108032), (64, 67520), (80, 54016), (128, 33760), (160, 27008), (211, 20480), (256, 16880), (320, 13504), (422, 10240), (512, 8440), (640, 6752), (844, 5120), (1024, 4220), (1055, 4096), (1280, 3376), (1688, 2560), (2048, 2110)]