19990181

素因数分解:

${\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{197}}^1$

素因数の和:388

約数の個数: 16

約数和(自身を含む): 21897216

約数和(自身を除く): 1907035

約数列:

[1, 17, 47, 127, 197, 799, 2159, 3349, 5969, 9259, 25019, 101473, 157403, 425323, 1175893, 19990181]

約数ペア:

[(1, 19990181), (17, 1175893), (47, 425323), (127, 157403), (197, 101473), (799, 25019), (2159, 9259), (3349, 5969)]