417920

素因数分解:

$2^7\times 5^1\times {\mathrm{653}}^1$

素因数の和:672

約数の個数: 32

約数和(自身を含む): 1000620

約数和(自身を除く): 582700

約数列:

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

約数ペア:

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