21387086

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{49279}}^1$

素因数の和:49319

約数の個数: 16

約数和(自身を含む): 37847040

約数和(自身を除く): 16459954

約数列:

[1, 2, 7, 14, 31, 62, 217, 434, 49279, 98558, 344953, 689906, 1527649, 3055298, 10693543, 21387086]

約数ペア:

[(1, 21387086), (2, 10693543), (7, 3055298), (14, 1527649), (31, 689906), (62, 344953), (217, 98558), (434, 49279)]