19970995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{659}}^1$

素因数の和:723

約数の個数: 32

約数和(自身を含む): 28512000

約数和(自身を除く): 8541005

約数列:

[1, 5, 11, 19, 29, 55, 95, 145, 209, 319, 551, 659, 1045, 1595, 2755, 3295, 6061, 7249, 12521, 19111, 30305, 36245, 62605, 95555, 137731, 210221, 363109, 688655, 1051105, 1815545, 3994199, 19970995]

約数ペア:

[(1, 19970995), (5, 3994199), (11, 1815545), (19, 1051105), (29, 688655), (55, 363109), (95, 210221), (145, 137731), (209, 95555), (319, 62605), (551, 36245), (659, 30305), (1045, 19111), (1595, 12521), (2755, 7249), (3295, 6061)]