21404800

素因数分解:

$2^7\times 5^2\times {\mathrm{6689}}^1$

素因数の和:6713

約数の個数: 48

約数和(自身を含む): 52884450

約数和(自身を除く): 31479650

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6689, 13378, 26756, 33445, 53512, 66890, 107024, 133780, 167225, 214048, 267560, 334450, 428096, 535120, 668900, 856192, 1070240, 1337800, 2140480, 2675600, 4280960, 5351200, 10702400, 21404800]

約数ペア:

[(1, 21404800), (2, 10702400), (4, 5351200), (5, 4280960), (8, 2675600), (10, 2140480), (16, 1337800), (20, 1070240), (25, 856192), (32, 668900), (40, 535120), (50, 428096), (64, 334450), (80, 267560), (100, 214048), (128, 167225), (160, 133780), (200, 107024), (320, 66890), (400, 53512), (640, 33445), (800, 26756), (1600, 13378), (3200, 6689)]