21043505

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{26141}}^1$

素因数の和:26176

約数の個数: 16

約数和(自身を含む): 30115584

約数和(自身を除く): 9072079

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 26141, 130705, 182987, 601243, 914935, 3006215, 4208701, 21043505]

約数ペア:

[(1, 21043505), (5, 4208701), (7, 3006215), (23, 914935), (35, 601243), (115, 182987), (161, 130705), (805, 26141)]