21157504

素因数分解:

$2^7\times {\mathrm{165293}}^1$

素因数の和:165307

約数の個数: 16

約数和(自身を含む): 42149970

約数和(自身を除く): 20992466

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 165293, 330586, 661172, 1322344, 2644688, 5289376, 10578752, 21157504]

約数ペア:

[(1, 21157504), (2, 10578752), (4, 5289376), (8, 2644688), (16, 1322344), (32, 661172), (64, 330586), (128, 165293)]