21697768

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{87491}}^1$

素因数の和:87528

約数の個数: 16

約数和(自身を含む): 41996160

約数和(自身を除く): 20298392

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 87491, 174982, 349964, 699928, 2712221, 5424442, 10848884, 21697768]

約数ペア:

[(1, 21697768), (2, 10848884), (4, 5424442), (8, 2712221), (31, 699928), (62, 349964), (124, 174982), (248, 87491)]