21165392

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69623}}^1$

素因数の和:69650

約数の個数: 20

約数和(自身を含む): 43166880

約数和(自身を除く): 22001488

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69623, 139246, 278492, 556984, 1113968, 1322837, 2645674, 5291348, 10582696, 21165392]

約数ペア:

[(1, 21165392), (2, 10582696), (4, 5291348), (8, 2645674), (16, 1322837), (19, 1113968), (38, 556984), (76, 278492), (152, 139246), (304, 69623)]