20844800

素因数分解:

$2^8\times 5^2\times {\mathrm{3257}}^1$

素因数の和:3283

約数の個数: 54

約数和(自身を含む): 51609978

約数和(自身を除く): 30765178

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 3257, 6400, 6514, 13028, 16285, 26056, 32570, 52112, 65140, 81425, 104224, 130280, 162850, 208448, 260560, 325700, 416896, 521120, 651400, 833792, 1042240, 1302800, 2084480, 2605600, 4168960, 5211200, 10422400, 20844800]

約数ペア:

[(1, 20844800), (2, 10422400), (4, 5211200), (5, 4168960), (8, 2605600), (10, 2084480), (16, 1302800), (20, 1042240), (25, 833792), (32, 651400), (40, 521120), (50, 416896), (64, 325700), (80, 260560), (100, 208448), (128, 162850), (160, 130280), (200, 104224), (256, 81425), (320, 65140), (400, 52112), (640, 32570), (800, 26056), (1280, 16285), (1600, 13028), (3200, 6514), (3257, 6400)]