19890729

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{797}}^1$

素因数の和:909

約数の個数: 24

約数和(自身を含む): 29877120

約数和(自身を除く): 9986391

約数列:

[1, 3, 9, 47, 59, 141, 177, 423, 531, 797, 2391, 2773, 7173, 8319, 24957, 37459, 47023, 112377, 141069, 337131, 423207, 2210081, 6630243, 19890729]

約数ペア:

[(1, 19890729), (3, 6630243), (9, 2210081), (47, 423207), (59, 337131), (141, 141069), (177, 112377), (423, 47023), (531, 37459), (797, 24957), (2391, 8319), (2773, 7173)]