18819975

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 33569280

約数和(自身を除く): 14749305

約数列:

[1, 3, 5, 15, 19, 25, 47, 57, 75, 95, 141, 235, 281, 285, 475, 705, 843, 893, 1175, 1405, 1425, 2679, 3525, 4215, 4465, 5339, 7025, 13207, 13395, 16017, 21075, 22325, 26695, 39621, 66035, 66975, 80085, 133475, 198105, 250933, 330175, 400425, 752799, 990525, 1254665, 3763995, 6273325, 18819975]

約数ペア:

[(1, 18819975), (3, 6273325), (5, 3763995), (15, 1254665), (19, 990525), (25, 752799), (47, 400425), (57, 330175), (75, 250933), (95, 198105), (141, 133475), (235, 80085), (281, 66975), (285, 66035), (475, 39621), (705, 26695), (843, 22325), (893, 21075), (1175, 16017), (1405, 13395), (1425, 13207), (2679, 7025), (3525, 5339), (4215, 4465)]