13978240

素因数分解:

$2^7\times 5^1\times {\mathrm{21841}}^1$

素因数の和:21860

約数の個数: 32

約数和(自身を含む): 33418260

約数和(自身を除く): 19440020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 21841, 43682, 87364, 109205, 174728, 218410, 349456, 436820, 698912, 873640, 1397824, 1747280, 2795648, 3494560, 6989120, 13978240]

約数ペア:

[(1, 13978240), (2, 6989120), (4, 3494560), (5, 2795648), (8, 1747280), (10, 1397824), (16, 873640), (20, 698912), (32, 436820), (40, 349456), (64, 218410), (80, 174728), (128, 109205), (160, 87364), (320, 43682), (640, 21841)]