19801455

素因数分解:

$3^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{6701}}^1$

素因数の和:6906

約数の個数: 16

約数和(自身を含む): 31847904

約数和(自身を除く): 12046449

約数列:

[1, 3, 5, 15, 197, 591, 985, 2955, 6701, 20103, 33505, 100515, 1320097, 3960291, 6600485, 19801455]

約数ペア:

[(1, 19801455), (3, 6600485), (5, 3960291), (15, 1320097), (197, 100515), (591, 33505), (985, 20103), (2955, 6701)]