21248312

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{37409}}^1$

素因数の和:37486

約数の個数: 16

約数和(自身を含む): 40402800

約数和(自身を除く): 19154488

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 37409, 74818, 149636, 299272, 2656039, 5312078, 10624156, 21248312]

約数ペア:

[(1, 21248312), (2, 10624156), (4, 5312078), (8, 2656039), (71, 299272), (142, 149636), (284, 74818), (568, 37409)]