21516304

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25373}}^1$

素因数の和:25434

約数の個数: 20

約数和(自身を含む): 42476076

約数和(自身を除く): 20959772

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25373, 50746, 101492, 202984, 405968, 1344769, 2689538, 5379076, 10758152, 21516304]

約数ペア:

[(1, 21516304), (2, 10758152), (4, 5379076), (8, 2689538), (16, 1344769), (53, 405968), (106, 202984), (212, 101492), (424, 50746), (848, 25373)]