21515254

素因数分解:

$2^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1\times {\mathrm{401}}^1$

素因数の和:735

約数の個数: 16

約数和(自身を含む): 32754960

約数和(自身を除く): 11239706

約数列:

[1, 2, 139, 193, 278, 386, 401, 802, 26827, 53654, 55739, 77393, 111478, 154786, 10757627, 21515254]

約数ペア:

[(1, 21515254), (2, 10757627), (139, 154786), (193, 111478), (278, 77393), (386, 55739), (401, 53654), (802, 26827)]