1671680

素因数分解:

$2^9\times 5^1\times {\mathrm{653}}^1$

素因数の和:676

約数の個数: 40

約数和(自身を含む): 4014252

約数和(自身を除く): 2342572

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 653, 1280, 1306, 2560, 2612, 3265, 5224, 6530, 10448, 13060, 20896, 26120, 41792, 52240, 83584, 104480, 167168, 208960, 334336, 417920, 835840, 1671680]

約数ペア:

[(1, 1671680), (2, 835840), (4, 417920), (5, 334336), (8, 208960), (10, 167168), (16, 104480), (20, 83584), (32, 52240), (40, 41792), (64, 26120), (80, 20896), (128, 13060), (160, 10448), (256, 6530), (320, 5224), (512, 3265), (640, 2612), (653, 2560), (1280, 1306)]