18747213

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{751}}^1$

素因数の和:964

約数の個数: 16

約数和(自身を含む): 25664256

約数和(自身を除く): 6917043

約数列:

[1, 3, 53, 157, 159, 471, 751, 2253, 8321, 24963, 39803, 117907, 119409, 353721, 6249071, 18747213]

約数ペア:

[(1, 18747213), (3, 6249071), (53, 353721), (157, 119409), (159, 117907), (471, 39803), (751, 24963), (2253, 8321)]