1981646

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{439}}^1$

素因数の和:539

約数の個数: 16

約数和(自身を含む): 3109920

約数和(自身を除く): 1128274

約数列:

[1, 2, 37, 61, 74, 122, 439, 878, 2257, 4514, 16243, 26779, 32486, 53558, 990823, 1981646]

約数ペア:

[(1, 1981646), (2, 990823), (37, 53558), (61, 32486), (74, 26779), (122, 16243), (439, 4514), (878, 2257)]