19887938

素因数分解:

$2^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{7211}}^1$

素因数の和:7417

約数の個数: 16

約数和(自身を含む): 34271424

約数和(自身を除く): 14383486

約数列:

[1, 2, 7, 14, 197, 394, 1379, 2758, 7211, 14422, 50477, 100954, 1420567, 2841134, 9943969, 19887938]

約数ペア:

[(1, 19887938), (2, 9943969), (7, 2841134), (14, 1420567), (197, 100954), (394, 50477), (1379, 14422), (2758, 7211)]