18869641

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{337}}^1\times {\mathrm{421}}^1$

素因数の和:784

約数の個数: 16

約数和(自身を含む): 22821760

約数和(自身を除く): 3952119

約数列:

[1, 7, 19, 133, 337, 421, 2359, 2947, 6403, 7999, 44821, 55993, 141877, 993139, 2695663, 18869641]

約数ペア:

[(1, 18869641), (7, 2695663), (19, 993139), (133, 141877), (337, 55993), (421, 44821), (2359, 7999), (2947, 6403)]