19883521

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{167}}^1\times {\mathrm{233}}^1$

素因数の和:480

約数の個数: 16

約数和(自身を含む): 23272704

約数和(自身を除く): 3389183

約数列:

[1, 7, 73, 167, 233, 511, 1169, 1631, 12191, 17009, 38911, 85337, 119063, 272377, 2840503, 19883521]

約数ペア:

[(1, 19883521), (7, 2840503), (73, 272377), (167, 119063), (233, 85337), (511, 38911), (1169, 17009), (1631, 12191)]