21710521

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{683}}^1$

素因数の和:948

約数の個数: 16

約数和(自身を含む): 26265600

約数和(自身を除く): 4555079

約数列:

[1, 7, 19, 133, 239, 683, 1673, 4541, 4781, 12977, 31787, 90839, 163237, 1142659, 3101503, 21710521]

約数ペア:

[(1, 21710521), (7, 3101503), (19, 1142659), (133, 163237), (239, 90839), (683, 31787), (1673, 12977), (4541, 4781)]