21804800

素因数分解:

$2^8\times 5^2\times {\mathrm{3407}}^1$

素因数の和:3433

約数の個数: 54

約数和(自身を含む): 53986128

約数和(自身を除く): 32181328

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, 3407, 6400, 6814, 13628, 17035, 27256, 34070, 54512, 68140, 85175, 109024, 136280, 170350, 218048, 272560, 340700, 436096, 545120, 681400, 872192, 1090240, 1362800, 2180480, 2725600, 4360960, 5451200, 10902400, 21804800]

約数ペア:

[(1, 21804800), (2, 10902400), (4, 5451200), (5, 4360960), (8, 2725600), (10, 2180480), (16, 1362800), (20, 1090240), (25, 872192), (32, 681400), (40, 545120), (50, 436096), (64, 340700), (80, 272560), (100, 218048), (128, 170350), (160, 136280), (200, 109024), (256, 85175), (320, 68140), (400, 54512), (640, 34070), (800, 27256), (1280, 17035), (1600, 13628), (3200, 6814), (3407, 6400)]