19389975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1237}}^1$

素因数の和:1280

約数の個数: 48

約数和(自身を含む): 36842880

約数和(自身を除く): 17452905

約数列:

[1, 3, 5, 11, 15, 19, 25, 33, 55, 57, 75, 95, 165, 209, 275, 285, 475, 627, 825, 1045, 1237, 1425, 3135, 3711, 5225, 6185, 13607, 15675, 18555, 23503, 30925, 40821, 68035, 70509, 92775, 117515, 204105, 258533, 340175, 352545, 587575, 775599, 1020525, 1292665, 1762725, 3877995, 6463325, 19389975]

約数ペア:

[(1, 19389975), (3, 6463325), (5, 3877995), (11, 1762725), (15, 1292665), (19, 1020525), (25, 775599), (33, 587575), (55, 352545), (57, 340175), (75, 258533), (95, 204105), (165, 117515), (209, 92775), (275, 70509), (285, 68035), (475, 40821), (627, 30925), (825, 23503), (1045, 18555), (1237, 15675), (1425, 13607), (3135, 6185), (3711, 5225)]