20968960

素因数分解:

$2^9\times 5^1\times {\mathrm{8191}}^1$

素因数の和:8214

約数の個数: 40

約数和(自身を含む): 50282496

約数和(自身を除く): 29313536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 8191, 16382, 32764, 40955, 65528, 81910, 131056, 163820, 262112, 327640, 524224, 655280, 1048448, 1310560, 2096896, 2621120, 4193792, 5242240, 10484480, 20968960]

約数ペア:

[(1, 20968960), (2, 10484480), (4, 5242240), (5, 4193792), (8, 2621120), (10, 2096896), (16, 1310560), (20, 1048448), (32, 655280), (40, 524224), (64, 327640), (80, 262112), (128, 163820), (160, 131056), (256, 81910), (320, 65528), (512, 40955), (640, 32764), (1280, 16382), (2560, 8191)]