18686101

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{20071}}^1$

素因数の和:20104

約数の個数: 12

約数和(自身を含む): 22882080

約数和(自身を除く): 4195979

約数列:

[1, 7, 19, 49, 133, 931, 20071, 140497, 381349, 983479, 2669443, 18686101]

約数ペア:

[(1, 18686101), (7, 2669443), (19, 983479), (49, 381349), (133, 140497), (931, 20071)]