156971787

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{393413}}^1$

素因数の和:393442

約数の個数: 16

約数和(自身を含む): 251784960

約数和(自身を除く): 94813173

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 393413, 1180239, 2753891, 7474847, 8261673, 22424541, 52323929, 156971787]

約数ペア:

[(1, 156971787), (3, 52323929), (7, 22424541), (19, 8261673), (21, 7474847), (57, 2753891), (133, 1180239), (399, 393413)]