21331840

素因数分解:

$2^7\times 5^1\times {\mathrm{33331}}^1$

素因数の和:33350

約数の個数: 32

約数和(自身を含む): 50997960

約数和(自身を除く): 29666120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33331, 66662, 133324, 166655, 266648, 333310, 533296, 666620, 1066592, 1333240, 2133184, 2666480, 4266368, 5332960, 10665920, 21331840]

約数ペア:

[(1, 21331840), (2, 10665920), (4, 5332960), (5, 4266368), (8, 2666480), (10, 2133184), (16, 1333240), (20, 1066592), (32, 666620), (40, 533296), (64, 333310), (80, 266648), (128, 166655), (160, 133324), (320, 66662), (640, 33331)]