21472208

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25321}}^1$

素因数の和:25382

約数の個数: 20

約数和(自身を含む): 42389028

約数和(自身を除く): 20916820

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25321, 50642, 101284, 202568, 405136, 1342013, 2684026, 5368052, 10736104, 21472208]

約数ペア:

[(1, 21472208), (2, 10736104), (4, 5368052), (8, 2684026), (16, 1342013), (53, 405136), (106, 202568), (212, 101284), (424, 50642), (848, 25321)]